FULLY TESTED & WARRANTIED*
Shipping
All products ship from our 30,000 sq. ft. Haverhill, MA warehouse
The Waters Positive Pressure-96 Processor is a high-performance sample preparation system designed to deliver consistent, reproducible solid-phase extraction (SPE) and filtration across 96-well formats. Ideal for high-throughput laboratories, this processor uses controlled positive pressure to ensure uniform flow across all wells, eliminating variability commonly seen with vacuum manifolds.
Unlike traditional vacuum-based systems in which uneven flow paths can lead to inconsistent recoveries the Positive Pressure-96 Processor applies precise, evenly distributed gas pressure to every well, ensuring reliable analyte recovery regardless of sample position. This makes it especially valuable for demanding applications in pharmaceutical, environmental, clinical, and food testing labs.
Designed for flexibility, the system accommodates all standard 96-well SPE and filtration plates, as well as 1 cc flangeless SPE cartridges, without requiring additional adapters. Its self-adjusting plate height design simplifies workflow integration and reduces setup time.
The processor supports adjustable inert gas pressure up to 80 psi, providing the force needed to efficiently process even viscous or complex samples while maintaining smooth, controlled flow rates.
Applications for the Waters Positive Pressure-96 Processor include solid-phase extraction (SPE), sample cleanup and preparation for LC, GC, and MS, clinical and pharmaceutical analysis, and environmental and food safety testing.
Purchasing a refurbished Waters Positive Pressure-96 Processor from American Instrument Exchange provides exceptional value without sacrificing performance. Each unit is:
Refurbished equipment allows laboratories to reduce capital costs while maintaining high-quality analytical performance, making it a smart investment for both growing and established facilities.
American Instrument Exchanges sells used and reconditioned lab equipment. Our technicians test all equipment to confirm that it operates properly and to the manufacturer’s specifications.
If you have particular testing requirements or requests please let us know and we’ll address these requirements during testing.
The photos above are representative. Please bear in mind that the equipment shown is currently in storage in our warehouse. In addition to testing each machine we will clean all the equipment thoroughly prior to shipment.
We often have multiple units of each model in stock and sometimes we're unable to feature photos of every single unit. At your request, we can provide photos of the equipment in your order after testing and cleaning.
Positive pressure systems apply consistent force to every well, eliminating uneven flow caused by dry wells or channeling in vacuum systems. This results in more reproducible extractions and improved analyte recovery, particularly in high-throughput workflows.
The processor supports all standard 96-well SPE and filtration plates, as well as 1 cc flangeless SPE cartridges, making it highly versatile for a wide range of workflows.
Yes. The system allows fine control of gas pressure (up to 80 psi), enabling optimization for different sample viscosities and extraction requirements.
The processor is suitable for a wide range of matrices, including:
Its consistent pressure delivery ensures reliable processing even for complex or viscous samples.
By enabling simultaneous processing of up to 96 samples with uniform flow, the system significantly reduces processing time while maintaining consistent results—ideal for high-throughput laboratories.
The Waters Positive Pressure-96 Processor requires an inert gas source (such as nitrogen) to generate controlled pressure across the manifold.
Routine maintenance includes:
Proper maintenance ensures long-term reliability and consistent performance.
Refurbished units offer:
For many labs, refurbished equipment provides the best balance of cost, reliability, and performance.
Yes, all equipment from American Instrument Exchange comes with a warranty.
Used/reconditioned/refurbished equipment is tested to make sure it operates to the manufacturer’s specifications and comes with a 90-day warranty (unless otherwise noted). New equipment comes with a warranty from the manufacturer.
Testing requirements vary across all the equipment categories we sell. Temperature controlled units are tested with NIST traceable probes and data loggers. Gaskets, external housing, glass, handles, controls and control screens are all thoroughly inspected for integrity and functionality.
We test all equipment using the manufacturer's parameters and specifications to confirm that the unit operates properly. While we may not be able to test for specific analytical applications we do our best to simulate the conditions under which the equipment will be used in your lab. If you have particular testing requirements please let us know and we’ll work with you to make sure these are addressed during testing.
We can ship products both nationally and internationally using a well-established network of transporters. Smaller items will ship via UPS. Larger equipment will be palletized and shipped either LTL or air-ride, depending on the specific equipment and/or delivery requirements. In many cases we can offer inside delivery. Customers are also welcome to make pick-up arrangements using their own preferred carrier.
All shipments are FOB Haverhill, MA. American Instrument Exchange will take reasonable steps to protect the equipment during shipment and the equipment will be fully insured. The customer will be charged for all shipping and handling charges, and fees incurred in the process of delivering the order.
For local customers in and around New England we can offer shipping and delivery using a local moving company trained by our staff to handle and deliver lab equipment. Our local movers can provide either standard dock-to-dock delivery or bring the equipment into your lab and set it in place.
Prior to signing the POD (Proof of Delivery), you are responsible for inspecting the goods for any damage. You MUST note any damage on the POD prior to letting the driver leave. This is to protect you, the receiver of the goods in the unlikely event of any damage. Once you sign the POD free and clear from damage, the goods are then deemed delivered in good order and no further claims would be applicable. This is the standard for all transportation so we want to protect you, our valued client.
American Instrument Exchange will accept the return of any product that is not working as represented and could not be replaced or repaired to the customer’s satisfaction by American Instrument or a technician hired by/vetted by American Instrument Exchange’s during the warranty period. The customer will be responsible for proper packaging of the equipment and all included accessories.
Customers who cancel orders after refurbishing has begun or after delivery where there are no equipment performance issues will be subject to a cancellation and restocking fee of between 20% and 40% and responsible for the full total of the shipping & handling costs for both the delivery and the return of the equipment.
Yes – call or email us today with a list of equipment you’re looking for and we can potentially put together a quote that includes a discount.
We strive to keep our pricing competitive and reasonable. If you find comparable items for sale at a lower price from other vendors please send us a link and or quote for the item and we’ll do our best to match or beat the price.
Customers are welcome to make an appointment to view equipment in our warehouse. Given our workload we may not be able to test or clean the equipment prior to your arrival if you have not committed to an order.
1023 Western Avenue is a working warehouse, not a showroom, and customers should dress appropriately and wear closed toe shoes.
Yes – please see our repair services page for more information.
