For Parts or Not Working. This item does not function as intended and is not fully operational.
It may be defective, damaged, or missing essential components, requiring repair or servicing. Sold strictly for parts, repair, or refurbishment.
Hurry! Flash Sale on items | 20% discount ✦
Adding product to your cart
For Parts or Not Working. This item does not function as intended and is not fully operational.
It may be defective, damaged, or missing essential components, requiring repair or servicing. Sold strictly for parts, repair, or refurbishment.
COHERENT 5920 Dye Circulator – AS IS
A precision fluid recirculation unit for Coherent dye lasers. The 5920 circulates laser dye through the gain medium cell at controlled flow rates to maintain stable lasing conditions. Offered AS IS for parts or repair.
Key Specifications
Model: 5920
Flow Rate: 20–200 mL/min adjustable
Max Pressure: 3 bar
Pump Type: Magnetically coupled gear pump
Materials: PTFE wetted parts, glass‑filled housing
Temperature Range: 5 °C–40 °C
Power: 115/230 VAC auto‑select, 50/60 Hz
Control: Front‑panel flow rate knob
This circulator is critical for uniform dye mixing and temperature control in tunable dye laser setups. AS IS condition—no functional guarantee, Powers up, pump works. Missing some frame / chassis screws.
Order processing (packing and handing over to the shipping company) takes up to 3 days, including weekends.
Currently, we ship all items with UPS or DHL in secure packaging and with a tracking number.
Delivery should arrive at the customer's address within 6 business days.
No. We only charge for the item and shipping.
It is the buyer's responsibility to pay any taxes (if applicable) in their country (import tax / customs fees).
Yes, according to the details provided in the order (or upon request), and as required.
Yes. Where we were able to test the item – we did.
In cases where full testing wasn't possible, we note that the item was taken from a working environment or a similar statement.
Unless it is specifically listed as AS-IS or For Parts – in which case no full functionality is guaranteed.
Yes, for 30 days from the date the item is delivered.
If we have stock – we will send a replacement.
Returns are not accepted for reasons such as change of mind, incompatibility, or finding a lower price.
Items listed as AS-IS or For Parts – have no warranty at all.
Many customers ask technical questions, like whether the item will work with their system.
We recommend checking with ChatGPT – it provides excellent answers!