VWR AD28H200-V11B Heated Circulator

Features

• Advanced Digital controller provides intuitive operation with a large LCD display and touchpad controls for easy monitoring and adjustment
• Variable-speed pressure and suction pump supports both internal bath circulation and circulation to compatible external equipment.
• Swivel 180 technology allows the controller to be rotated independently from the bath for improved viewing and easier access.
• LidDock lid-stowing system provides a convenient place to position the reservoir cover while loading samples or replenishing bath fluid
• DuraTop phenolic bath top provides resistance to common laboratory chemicals while creating a more comfortable working surface around the heated reservoir
• Stainless steel reservoir provides durable construction for routine laboratory heating and circulation applications
• Precise temperature stability helps maintain consistent bath conditions for temperature-sensitive laboratory workflows
• 28 L reservoir capacity accommodates larger sample loads and higher-volume heating applications
• External circulation capability allows conditioned fluid to be supplied to compatible laboratory instruments and equipment
• Designed for sample heating, fluid conditioning, analytical workflows, and other general laboratory and research applications

The VWR AD28H200-V11B Heated Circulator is designed to provide reliable and uniform temperature control for laboratory applications requiring consistent liquid heating and circulation. Built with an Advanced Digital controller, the unit features a large LCD display with intuitive touchpad controls, allowing users to easily monitor and adjust operating conditions. Swivel 180 technology allows the controller to be rotated independently from the bath, providing improved visibility and convenient access from different working positions.

Engineered for versatile laboratory use, the system provides controlled heating from ambient +10°C to +200°C while supporting both internal bath operation and external circulation to compatible equipment. The 28 L bath provides ample working capacity for sample heating, fluid conditioning, and analytical workflows, while the circulating design helps maintain uniform conditions throughout the reservoir. Practical features including the LidDock lid-stowing system and chemical-resistant DuraTop phenolic bath top help simplify routine operation and provide a more convenient working environment around the heated bath.

All of our equipment is fully tested to perform at factory specifications before being shipped.

VWR AD28H200-V11B Heated Circulator Specifications

Recirculating Chiller Inspection and Recertification Checklist

• Inspect display for dimming or dead pixels and replace as necessary to maintain clear visual feedback
• Verify functionality of all buttons and input devices, ensuring reliable and responsive control
• Check that all external hosing connections are secure and properly installed to prevent leakage
• Test unit flow rate on a closed-loop system to confirm consistent fluid dynamics
• Examine all external surfaces for leaks, confirming a sealed and contained system
• Inspect internal components for any signs of leaks to ensure system integrity
• Verify power supply output for accurate voltage delivery per operational specifications
• Inspect all internal wiring, checking for any frays, tears, or compromised insulation
• Replace internal filters to maintain optimal fluid purity and system performance
• Confirm that the fan operates at proper speeds to provide effective cooling
• Verify compressor functionality for consistent performance and cooling efficiency
• Test cooling capacity, confirming it meets performance specifications at 20°C
• Measure water pump output to confirm correct PSI for stable fluid flow
• Determine the lowest achievable temperature, verifying against manufacturer standards
• Ensure cosmetic condition meets standards with no damage affecting functionality or aesthetics

Technician Inspection and Recertification Checklist: Recirculating Chiller

The Following Checklist Is to Be Performed on All Incoming and Outgoing Equipment

Task	Completed?	Remarks?
Inspect display for dimming or dead pixels, replace if necessary	Completed
Verify functionality of all buttons and input devices	Completed
Ensure external hosing connections are secure	Completed
Test flow rate on closed-loop system	Completed
Inspect for external leaks	Completed
Inspect for internal leaks	Completed
Verify power supply output voltage	Completed
Inspect internal wiring for frays or tears	Completed
Replace internal filters	Completed
Confirm fan functionality	Completed
Verify compressor functionality	Completed
Test cooling capacity at 20°C	Completed
Confirm water pump PSI output	Completed
Determine lowest achievable temperature	Completed
Ensure cosmetic condition meets standards	Completed

102 Tide Mill Road, Hampton NH 03842
customerservice@marshallscientific.com | (603) 601-8511 |
www.marshallscientific.com
Copyright © 2024 by Marshall Scientific LLC. All rights reserved.

To View More of Our Recertification Protocol Click Here