{"product_id":"vwr-314ac-analytical-balance","title":"VWR 314AC Analytical Balance","description":"\u003ch2\u003eVWR 314AC Analytical Balance – Used \u0026amp; Refurbished\u003c\/h2\u003e\n\u003cp\u003eThe VWR 314AC Analytical Balance is a high-capacity analytical balance designed for laboratories that need 0.1 mg readability without sacrificing the ability to weigh larger samples and containers. With a maximum capacity of 310 g, 0.1 mg readability, 0.1 mg repeatability, and 0.2 mg linearity, the VWR 314AC provides four-decimal-place analytical weighing performance across an unusually generous capacity range.\u003c\/p\u003e\n\u003cp\u003eAvailable used and refurbished from American Instrument Exchange, the VWR 314AC combines analytical weighing performance with an enclosed draft chamber, automatic internal calibration and adjustment capabilities, multiple weighing units, 11 application modes, data-management functions, peripheral connectivity, and below-balance weighing capability.\u003c\/p\u003e\n\u003cp\u003eIts 310 g capacity is particularly useful for laboratories that need analytical resolution but routinely work with larger tare vessels, containers, or samples that can exceed the capacity of conventional 160 g or 220 g analytical balances.\u003c\/p\u003e\n\u003cp\u003eEach refurbished VWR 314AC is inspected, calibrated, performance tested, and cleaned by American Instrument Exchange and includes a 90-day warranty.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e310 g maximum weighing capacity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e0.1 mg \/ 0.0001 g readability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e0.1 mg repeatability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e0.2 mg linearity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e10 mg specified minimum capacity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e85 mm weighing pan\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnclosed analytical draft chamber\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApproximately 3.5-second average stabilization time\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInternal automatic calibration and adjustment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTemperature-activated adjustment capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTime-activated adjustment capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e17 standard weighing units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTwo programmable user-defined weighing units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e11 integrated application modes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAutomatic zero and tare functions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDatabase and printout functions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePeripheral-device connectivity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBelow-balance weighing capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRefurbished and tested by American Instrument Exchange\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e90-day warranty included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC belongs to an earlier generation of VWR A-Series analytical balances designed to provide high-resolution laboratory weighing with extensive built-in functionality.\u003c\/p\u003e\n\u003cp\u003eThe defining specification of the 314AC is its combination of 310 g maximum capacity and 0.1 mg readability.\u003c\/p\u003e\n\u003cp\u003eMany traditional analytical balances provide maximum capacities in the range of approximately 160 to 220 g. The additional capacity of the 314AC allows laboratories to use heavier weighing vessels and accommodate larger samples without moving to a lower-resolution precision balance.\u003c\/p\u003e\n\u003cp\u003eThe instrument also incorporates internal calibration and adjustment, an enclosed draft chamber, multiple weighing applications, programmable settings, database functions, electronic communications, and below-balance weighing.\u003c\/p\u003e\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC is well suited for analytical chemistry, pharmaceutical quality control, biotechnology research, standards preparation, quantitative sample preparation, gravimetric analysis, formulation, environmental testing, chemical research, density determination, checkweighing, statistical weighing, and other applications requiring 0.1 mg resolution.\u003c\/p\u003e\n\u003cp\u003eIts 310 g capacity is particularly useful when analytical measurements involve larger flasks, beakers, bottles, crucibles, containers, or other tare vessels.\u003c\/p\u003e\n\u003cp\u003ePharmaceutical and chemical laboratories can use the 314AC for preparing reference standards, formulations, solutions, and quantitative samples.\u003c\/p\u003e\n\u003cp\u003eResearch and academic laboratories can use the balance for routine analytical procedures where four-decimal-place resolution and relatively high capacity are both desirable.\u003c\/p\u003e\n\u003ch3\u003eIdeal Laboratory Types\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC is appropriate for pharmaceutical companies, biotechnology laboratories, chemical laboratories, environmental testing facilities, quality-control departments, universities, research institutions, contract testing laboratories, and industrial analytical facilities.\u003c\/p\u003e\n\u003cp\u003eIt is particularly attractive for laboratories seeking a conventional analytical balance with substantially more capacity than many 120 g, 160 g, or 220 g models.\u003c\/p\u003e\n\u003ch3\u003eAnalytical Weighing Performance\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC provides a maximum capacity of 310 g with 0.1 mg readability.\u003c\/p\u003e\n\u003cp\u003eManufacturer specifications list repeatability at 0.1 mg and linearity at 0.2 mg.\u003c\/p\u003e\n\u003cp\u003eThis places the 314AC firmly within the conventional analytical-balance category.\u003c\/p\u003e\n\u003cp\u003eIts 0.1 mg readability allows the display to resolve changes of 0.0001 g, providing substantially greater resolution than laboratory precision balances with 1 mg, 10 mg, or 100 mg readability.\u003c\/p\u003e\n\u003cp\u003eThe balance has an average stabilization time of approximately 3.5 seconds.\u003c\/p\u003e\n\u003cp\u003eWhile newer analytical balances may stabilize more quickly, this response time remains appropriate for many routine analytical laboratory procedures.\u003c\/p\u003e\n\u003ch3\u003eHigh-Capacity Analytical Weighing\u003c\/h3\u003e\n\u003cp\u003eThe 310 g capacity is one of the most important characteristics of the VWR 314AC.\u003c\/p\u003e\n\u003cp\u003eHigher capacity provides greater flexibility when the combined mass of a sample and its weighing vessel is substantial.\u003c\/p\u003e\n\u003cp\u003eFor example, a laboratory may need to measure a relatively small quantity of material into a heavier glass vessel. A lower-capacity analytical balance could reach its maximum capacity before the desired sample has been added.\u003c\/p\u003e\n\u003cp\u003eThe 314AC provides additional headroom while retaining 0.1 mg readability.\u003c\/p\u003e\n\u003cp\u003eThis makes it particularly useful for analytical methods involving larger containers, formulation vessels, crucibles, bottles, and other relatively heavy tare loads.\u003c\/p\u003e\n\u003ch3\u003eReadability vs. Minimum Sample Weight\u003c\/h3\u003e\n\u003cp\u003eThe 0.1 mg readability of the VWR 314AC describes the smallest increment shown on the balance display.\u003c\/p\u003e\n\u003cp\u003eIt should not be interpreted as the minimum quantity that can be accurately weighed.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer's technical specifications identify a minimum capacity of 10 mg, but minimum capacity and method-specific minimum sample weight are not necessarily the same measurement concept.\u003c\/p\u003e\n\u003cp\u003eFor quantitative pharmaceutical or other regulated applications, laboratories should establish an appropriate minimum sample weight based on repeatability, measurement uncertainty, applicable standards, and performance under actual installation conditions.\u003c\/p\u003e\n\u003cp\u003eThis distinction is especially important when comparing older analytical balances with newer instruments that may publish calculated USP minimum-weight specifications.\u003c\/p\u003e\n\u003ch3\u003eAutomatic Internal Calibration \u0026amp; Adjustment\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC incorporates an internal calibration and adjustment system.\u003c\/p\u003e\n\u003cp\u003eThe balance can be configured to initiate adjustment in response to changes in temperature.\u003c\/p\u003e\n\u003cp\u003eIt can also be programmed to initiate calibration and adjustment based on elapsed time, with programmable intervals up to 12 hours.\u003c\/p\u003e\n\u003cp\u003eTemperature- and time-based activation can be used simultaneously, allowing the balance to initiate adjustment when either programmed condition occurs first.\u003c\/p\u003e\n\u003cp\u003eAutomatic adjustment helps maintain weighing performance as environmental conditions change during the working day.\u003c\/p\u003e\n\u003cp\u003eExternal verification with appropriate reference weights should still be incorporated according to the laboratory's quality-control procedures.\u003c\/p\u003e\n\u003ch3\u003eControlling Drafts, Vibration \u0026amp; Temperature\u003c\/h3\u003e\n\u003cp\u003eAt 0.1 mg readability, environmental conditions can significantly affect weighing performance.\u003c\/p\u003e\n\u003cp\u003eThe VWR 314AC should be installed away from fans, HVAC outlets, doorways, high-traffic areas, and other sources of air movement.\u003c\/p\u003e\n\u003cp\u003eVibration should also be minimized.\u003c\/p\u003e\n\u003cp\u003eCentrifuges, shakers, pumps, compressors, and other mechanical equipment can transmit vibration through laboratory benches or flooring and interfere with sensitive measurements.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer specifies an operating environment of 10°C to 40°C and recommends avoiding extreme temperature fluctuations.\u003c\/p\u003e\n\u003cp\u003eA rigid, level weighing surface provides the best foundation for consistent analytical measurements.\u003c\/p\u003e\n\u003ch3\u003eDraft Chamber \u0026amp; 85 mm Weighing Pan\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC uses an enclosed draft chamber to protect sensitive measurements from air movement.\u003c\/p\u003e\n\u003cp\u003eThe analytical weighing system incorporates an 85 mm weighing pan along with a spill ring, draft ring, and draft-chamber floor.\u003c\/p\u003e\n\u003cp\u003eThe internal draft chamber provides substantial vertical clearance for common analytical weighing vessels.\u003c\/p\u003e\n\u003cp\u003eThe balance has an overall footprint of approximately 333 × 206 mm and an overall height of approximately 355 mm.\u003c\/p\u003e\n\u003cp\u003eThe internal chamber measures approximately 160 × 168 × 230 mm, with approximately 227 mm of usable height above the weighing pan.\u003c\/p\u003e\n\u003cp\u003eThis relatively tall chamber can accommodate a variety of bottles, flasks, beakers, and other laboratory containers.\u003c\/p\u003e\n\u003ch3\u003eWeighing Units\u003c\/h3\u003e\n\u003cp\u003eThe VWR A-Series provides extensive unit-selection capability.\u003c\/p\u003e\n\u003cp\u003eThe 314AC supports 17 predefined units of measurement along with two user-defined modes.\u003c\/p\u003e\n\u003cp\u003eAvailable units include grams, milligrams, carats, grains, pounds, ounces, troy ounces, pennyweights, newtons, and several additional specialized mass units.\u003c\/p\u003e\n\u003cp\u003eThe two user-defined modes allow the operator to apply a programmed conversion factor to the measured value.\u003c\/p\u003e\n\u003cp\u003eFor most scientific laboratories, grams and milligrams will remain the primary units, but the additional selections increase flexibility for specialized applications.\u003c\/p\u003e\n\u003ch3\u003eEleven Integrated Application Modes\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC provides 11 application modes that extend its functionality beyond basic weighing.\u003c\/p\u003e\n\u003cp\u003eAvailable applications include basic weighing, piece counting, checkweighing, dosing, percentage or deviation weighing, solids density determination, liquids density determination, animal or dynamic weighing, statistics, totalizing, and peak hold.\u003c\/p\u003e\n\u003cp\u003eThese integrated functions allow many routine laboratory calculations to be performed directly through the balance rather than requiring separate manual calculations.\u003c\/p\u003e\n\u003cp\u003eFor laboratories using one balance for multiple departments or procedures, the range of application modes can significantly increase versatility.\u003c\/p\u003e\n\u003ch3\u003eDensity Determination\u003c\/h3\u003e\n\u003cp\u003eThe 314AC includes application modes for determining the density of both solids and liquids.\u003c\/p\u003e\n\u003cp\u003eDensity measurements are based on relationships between mass, volume, and buoyancy.\u003c\/p\u003e\n\u003cp\u003eWith the appropriate setup and accessories, these applications can support materials research, chemical testing, quality control, and other laboratory procedures where density is an important physical property.\u003c\/p\u003e\n\u003ch3\u003eDynamic \u0026amp; Animal Weighing\u003c\/h3\u003e\n\u003cp\u003eThe dynamic weighing application is designed for samples whose measured mass may fluctuate during measurement.\u003c\/p\u003e\n\u003cp\u003eInstead of relying on a single instantaneous reading, the balance can process a series of measurements to produce a representative result.\u003c\/p\u003e\n\u003cp\u003eThis can be useful for moving samples, unstable materials, and other situations where conventional static weighing is difficult.\u003c\/p\u003e\n\u003ch3\u003eStatistics \u0026amp; Totalizing\u003c\/h3\u003e\n\u003cp\u003eThe integrated statistics function allows multiple weighing results to be evaluated as a group.\u003c\/p\u003e\n\u003cp\u003eThis can support repetitive quality-control procedures and other applications where technicians need to evaluate a series of measurements rather than an individual result.\u003c\/p\u003e\n\u003cp\u003eThe totalizing application can accumulate multiple measurements, making it useful when several separately weighed samples or components need to be combined mathematically.\u003c\/p\u003e\n\u003ch3\u003eAutomatic Zero \u0026amp; Tare Functions\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC includes automatic zero and tare capabilities.\u003c\/p\u003e\n\u003cp\u003eTaring allows the mass of a weighing container to be removed from the displayed result so that the balance reports the net mass of the sample.\u003c\/p\u003e\n\u003cp\u003eManual tare values can also be entered when appropriate.\u003c\/p\u003e\n\u003cp\u003eThese functions are particularly useful for formulation, sample preparation, and repetitive analytical procedures involving standardized containers.\u003c\/p\u003e\n\u003ch3\u003eData Management \u0026amp; Printouts\u003c\/h3\u003e\n\u003cp\u003eThe VWR A-Series incorporates database parameters, printout settings, and data import\/export capabilities.\u003c\/p\u003e\n\u003cp\u003eThese features allow laboratories to configure how weighing information is stored, transmitted, and documented.\u003c\/p\u003e\n\u003cp\u003eThe balance can communicate with compatible peripheral devices such as printers and computers.\u003c\/p\u003e\n\u003cp\u003eElectronic transfer can reduce the need to manually copy results from the display and can help minimize transcription errors.\u003c\/p\u003e\n\u003ch3\u003eBelow-Balance Weighing\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC supports below-balance weighing.\u003c\/p\u003e\n\u003cp\u003eThis allows a sample to be suspended beneath the balance rather than placed directly on the weighing pan.\u003c\/p\u003e\n\u003cp\u003eBelow-balance weighing is useful for specialized procedures such as density determination, buoyancy measurements, magnetic samples, oversized objects, and other applications where conventional pan weighing is impractical.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eVWR 314AC\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalance Type\u003c\/td\u003e\n\u003ctd\u003eAnalytical Balance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Capacity\u003c\/td\u003e\n\u003ctd\u003e310 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer-Specified Minimum Capacity\u003c\/td\u003e\n\u003ctd\u003e10 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReadability\u003c\/td\u003e\n\u003ctd\u003e0.1 mg \/ 0.0001 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRepeatability\u003c\/td\u003e\n\u003ctd\u003e0.1 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLinearity\u003c\/td\u003e\n\u003ctd\u003e0.2 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTare Range\u003c\/td\u003e\n\u003ctd\u003e0–310 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeighing Pan\u003c\/td\u003e\n\u003ctd\u003eØ85 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAverage Stabilization Time\u003c\/td\u003e\n\u003ctd\u003eApprox. 3.5 Seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Drift\u003c\/td\u003e\n\u003ctd\u003e1 ppm\/°C from 10–40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment\u003c\/td\u003e\n\u003ctd\u003eInternal; Temperature and\/or Time Activated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Modes\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Weighing Units\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser-Defined Units\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBelow-Balance Weighing\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 333 × 206 × 355 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Draft Chamber\u003c\/td\u003e\n\u003ctd\u003eApprox. 160 × 168 × 230 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight Above Weigh Pan\u003c\/td\u003e\n\u003ctd\u003eApprox. 227 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003eApprox. 5.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e10–40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input\u003c\/td\u003e\n\u003ctd\u003e100–240 VAC, 50\/60 Hz, 1.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Output\u003c\/td\u003e\n\u003ctd\u003e15 VDC, 2.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eUsed \u0026amp; Refurbished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTesting\u003c\/td\u003e\n\u003ctd\u003eAccuracy, Repeatability, Linearity, Corner Load, Adjustment \u0026amp; Functional Testing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e90 Days from American Instrument Exchange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eVWR 314AC vs. a Precision Balance\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC is an analytical balance rather than a general-purpose precision balance.\u003c\/p\u003e\n\u003cp\u003eIts 0.1 mg readability provides ten times finer resolution than a 1 mg precision balance and 100 times finer resolution than a 0.01 g balance.\u003c\/p\u003e\n\u003cp\u003eThis makes the 314AC appropriate for quantitative analytical procedures where small differences in mass must be detected.\u003c\/p\u003e\n\u003cp\u003eThe tradeoff is greater sensitivity to airflow, vibration, temperature changes, static electricity, and operator technique.\u003c\/p\u003e\n\u003cp\u003eFor bulk sample preparation where 1 mg or 10 mg readability is sufficient, a precision balance may provide faster and less environmentally sensitive operation.\u003c\/p\u003e\n\u003ch3\u003eVWR 314AC vs. Lower-Capacity Analytical Balances\u003c\/h3\u003e\n\u003cp\u003eOne of the principal reasons to choose the VWR 314AC is its 310 g capacity.\u003c\/p\u003e\n\u003cp\u003eMany analytical balances provide capacities of approximately 120 to 220 g.\u003c\/p\u003e\n\u003cp\u003eThose models may be entirely adequate for small samples and lightweight weighing vessels.\u003c\/p\u003e\n\u003cp\u003eThe 314AC provides additional capacity while maintaining 0.1 mg readability.\u003c\/p\u003e\n\u003cp\u003eFor laboratories routinely using heavier containers or performing larger analytical formulations, that additional capacity can prevent overloads and reduce the need to divide procedures between multiple balances.\u003c\/p\u003e\n\u003ch3\u003eVWR 314AC vs. Semi-Micro Balances\u003c\/h3\u003e\n\u003cp\u003eA semi-micro balance typically provides 0.01 mg readability, ten times finer than the 0.1 mg readability of the VWR 314AC.\u003c\/p\u003e\n\u003cp\u003eSemi-micro instruments are therefore preferable when very small sample quantities or lower minimum sample weights require 10 µg resolution.\u003c\/p\u003e\n\u003cp\u003eThe VWR 314AC provides considerably more capacity than many semi-micro balances and is less demanding environmentally.\u003c\/p\u003e\n\u003cp\u003eFor routine four-decimal analytical weighing, its combination of 310 g capacity and 0.1 mg readability can provide a practical balance between resolution and usable capacity.\u003c\/p\u003e\n\u003ch3\u003eVWR 314AC vs. Current VWR Analytical Balances\u003c\/h3\u003e\n\u003cp\u003eThe VWR 314AC belongs to an earlier generation of the VWR A-Series and should not be confused with newer VWR analytical balances carrying similar capacity ratings.\u003c\/p\u003e\n\u003cp\u003eCurrent-generation VWR models may provide updated interfaces, communications, weighing-pan dimensions, stabilization performance, and other features.\u003c\/p\u003e\n\u003cp\u003eThe 314AC nevertheless provides the fundamental capabilities required for demanding analytical weighing: 0.1 mg readability, 310 g capacity, internal automatic adjustment, an enclosed draft chamber, multiple application modes, and electronic communications.\u003c\/p\u003e\n\u003cp\u003eFor laboratories that do not require the latest interface or network features, a properly refurbished 314AC can provide a cost-effective analytical weighing solution.\u003c\/p\u003e\n\u003ch3\u003eRefurbishment \u0026amp; Performance Testing\u003c\/h3\u003e\n\u003cp\u003eEach used VWR 314AC offered by American Instrument Exchange undergoes inspection, cleaning, calibration, and functional testing before shipment.\u003c\/p\u003e\n\u003cp\u003eTechnicians inspect the housing, display and keyboard, weighing pan, draft chamber, leveling components, power supply, interfaces, and installed accessories.\u003c\/p\u003e\n\u003cp\u003eThe balance is evaluated with appropriate reference weights at multiple points across its weighing range.\u003c\/p\u003e\n\u003cp\u003eRepeatability testing uses repeated measurements of the same reference load to evaluate measurement consistency.\u003c\/p\u003e\n\u003cp\u003eLinearity testing evaluates weighing performance at different points across the 310 g capacity, while corner-load testing helps verify consistent response at different positions on the weighing pan.\u003c\/p\u003e\n\u003cp\u003eThe internal adjustment system, zero and tare functions, application controls, and other installed functions are also evaluated.\u003c\/p\u003e\n\u003cp\u003eFollowing final quality-control testing and cleaning, the balance is prepared for shipment.\u003c\/p\u003e\n\u003cp\u003eUsed and refurbished equipment from American Instrument Exchange includes a 90-day warranty unless otherwise specified.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Installation Considerations\u003c\/h3\u003e\n\u003cp\u003eAnalytical balances should be handled carefully during transportation and installation.\u003c\/p\u003e\n\u003cp\u003eAfter the VWR 314AC arrives at its destination, it should be installed on a rigid, level, vibration-resistant surface away from direct airflow and rapidly changing temperatures.\u003c\/p\u003e\n\u003cp\u003eThe manufacturer recommends allowing approximately two hours of warm-up for the 314AC before calibration and critical weighing.\u003c\/p\u003e\n\u003cp\u003eTransportation, changes in barometric pressure, humidity, and differences in ambient temperature can influence weighing performance, so calibration and performance verification should be completed at the point of use.\u003c\/p\u003e\n\u003cp\u003eFor sensitive measurements, samples and weighing vessels should also be allowed to equilibrate to laboratory temperature before weighing.\u003c\/p\u003e\n\u003ch3\u003eRelated Laboratory Equipment\u003c\/h3\u003e\n\u003cp\u003eAmerican Instrument Exchange maintains an extensive inventory of used and refurbished \u003ca href=\"https:\/\/www.americaninstrument.com\/collections\/balances\"\u003elaboratory balances\u003c\/a\u003e, including analytical balances, semi-micro balances, microbalances, and precision balances for applications ranging from routine sample preparation to high-resolution quantitative analysis.\u003c\/p\u003e\n\u003cp\u003eLabs developing complete analytical or sample-preparation workflows can also source \u003ca href=\"https:\/\/www.americaninstrument.com\/collections\/centrifuges\"\u003ecentrifuges\u003c\/a\u003e, \u003ca href=\"https:\/\/www.americaninstrument.com\/collections\/baths\"\u003ewater baths\u003c\/a\u003e, \u003ca href=\"https:\/\/www.americaninstrument.com\/collections\/incubators\"\u003eincubators\u003c\/a\u003e, \u003ca href=\"https:\/\/www.americaninstrument.com\/collections\/refrigerators\"\u003elaboratory refrigerators\u003c\/a\u003e, \u003ca href=\"https:\/\/www.americaninstrument.com\/collections\/freezers-ice-makers\"\u003elaboratory freezers\u003c\/a\u003e, and \u003ca href=\"https:\/\/www.americaninstrument.com\/\"\u003eother refurbished laboratory equipment\u003c\/a\u003e from American Instrument Exchange.\u003c\/p\u003e\n\u003ch3\u003eVWR 314AC Analytical Balance FAQs\u003c\/h3\u003e\n\u003ch4\u003eWhat is the maximum capacity of the VWR 314AC?\u003c\/h4\u003e\n\u003cp\u003eThe VWR 314AC has a maximum weighing capacity of 310 g.\u003c\/p\u003e\n\u003ch4\u003eWhat is the readability of the VWR 314AC?\u003c\/h4\u003e\n\u003cp\u003eThe balance provides 0.1 mg, or 0.0001 g, readability.\u003c\/p\u003e\n\u003ch4\u003eIs the VWR 314AC an analytical balance?\u003c\/h4\u003e\n\u003cp\u003eYes. Its 0.1 mg readability and enclosed draft chamber place the VWR 314AC within the conventional analytical-balance category.\u003c\/p\u003e\n\u003ch4\u003eWhat is the repeatability specification?\u003c\/h4\u003e\n\u003cp\u003eThe manufacturer specifies repeatability of 0.1 mg.\u003c\/p\u003e\n\u003ch4\u003eWhat is the linearity specification?\u003c\/h4\u003e\n\u003cp\u003eThe manufacturer specifies linearity of 0.2 mg.\u003c\/p\u003e\n\u003ch4\u003eHow quickly does the VWR 314AC stabilize?\u003c\/h4\u003e\n\u003cp\u003eThe manufacturer's specified average stabilization time is approximately 3.5 seconds.\u003c\/p\u003e\n\u003ch4\u003eDoes the VWR 314AC have internal calibration?\u003c\/h4\u003e\n\u003cp\u003eYes. The VWR 314AC incorporates internal calibration and adjustment capabilities that can be activated according to temperature change and elapsed time.\u003c\/p\u003e\n\u003ch4\u003eHow large is the weighing pan?\u003c\/h4\u003e\n\u003cp\u003eThe VWR 314AC uses an 85 mm diameter weighing pan.\u003c\/p\u003e\n\u003ch4\u003eHow large is the draft chamber?\u003c\/h4\u003e\n\u003cp\u003eThe internal chamber measures approximately 160 × 168 × 230 mm, with approximately 227 mm of usable height above the weighing pan.\u003c\/p\u003e\n\u003ch4\u003eWhat application modes are available?\u003c\/h4\u003e\n\u003cp\u003eThe A-Series supports basic weighing, piece counting, checkweighing, dosing, percentage\/deviation weighing, solids density, liquids density, dynamic weighing, statistics, totalizing, and peak hold.\u003c\/p\u003e\n\u003ch4\u003eCan the VWR 314AC determine density?\u003c\/h4\u003e\n\u003cp\u003eYes. The balance includes application modes for both solids and liquids density determination when used with an appropriate weighing setup.\u003c\/p\u003e\n\u003ch4\u003eDoes the VWR 314AC support below-balance weighing?\u003c\/h4\u003e\n\u003cp\u003eYes. Below-balance weighing is supported for specialized applications such as density and buoyancy measurements.\u003c\/p\u003e\n\u003ch4\u003eWhat is the operating temperature range?\u003c\/h4\u003e\n\u003cp\u003eThe manufacturer specifies an operating range of 10°C to 40°C.\u003c\/p\u003e\n\u003ch4\u003eHow long should the VWR 314AC warm up?\u003c\/h4\u003e\n\u003cp\u003eThe manufacturer recommends approximately two hours of warm-up before calibration and critical weighing.\u003c\/p\u003e\n\u003ch4\u003eIs the VWR 314AC the same as the newer VWR 310AC?\u003c\/h4\u003e\n\u003cp\u003eNo. Although both models have approximately 310 g capacity and 0.1 mg readability, they belong to different generations and have different specifications and features.\u003c\/p\u003e\n\u003ch4\u003eIs this VWR 314AC new or refurbished?\u003c\/h4\u003e\n\u003cp\u003eThis VWR 314AC is offered used and refurbished by American Instrument Exchange. It is inspected, calibrated, performance tested, cleaned, and supplied with a 90-day warranty.\u003c\/p\u003e\n\u003ch4\u003eWhy purchase a refurbished VWR 314AC?\u003c\/h4\u003e\n\u003cp\u003eA refurbished VWR 314AC provides 310 g capacity, 0.1 mg analytical readability, internal automatic adjustment, an enclosed draft chamber, multiple application modes, and electronic communications at a lower acquisition cost than many new high-capacity analytical balances.\u003c\/p\u003e","brand":"VWR","offers":[{"title":"Default Title","offer_id":50463854854192,"sku":"0689F BALANCE","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0252\/1228\/9072\/files\/DSC_0016b_a0beeaa3-cbf8-4ea8-94ca-7923abbdc84e.jpg?v=1790018689","url":"https:\/\/www.americaninstrument.com\/products\/vwr-314ac-analytical-balance","provider":"American Instrument Exchange","version":"1.0","type":"link"}