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🧪 Calibrate with Confidence — Stay Ahead in Water Quality Testing!
The Hach SpecCheck DPD Chlorine LR Gel Standards Set offers four ready-to-use sealed gel cells that simulate chlorine test colors within a 0-2.0 mg/L Cl₂ range. Designed for precise instrument calibration, these computer-formulated standards boast a 2-year shelf life, are non-hazardous, and come with a Certificate of Analysis, ensuring reliable and hassle-free water quality testing.






| 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
2 weeks ago
1 week ago