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🧪 Elevate your chlorine testing game with precision you can trust!
The Hach SpecCheck DPD Chlorine LR Gel Standards Set offers four sealed gel-filled glass cells with chlorine standards ranging from 0 to 2.0 mg/L. Designed for easy, ready-to-use calibration verification, it ensures consistent instrument response with a two-year shelf life and non-hazardous formulation, all neatly packaged with instructions and certification for professional laboratory use.






| Customer Reviews | 4.1 out of 5 stars 19 Reviews |
W**E
I would buy again
Product was as described and was only a month old so the expiration dates were far enough out that I would have a long life use for the item.
J**H
Expensive
They expire less than a year from date of receipt
R**.
SpecChek works!
This product is used to perform monthly accuracy checks required by the state of Texas for Hatch Chlorine Testers. The product arrived on time and was well packaged.
Trustpilot
1 day ago
5 days ago