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🧪 Calibrate with confidence—because your data deserves precision.
The Hach SpecCheck DPD Chlorine LR Gel Standards Set offers four ready-to-use sealed glass cells containing gels that simulate chlorine test colors within a 0-2.0 mg/L range. Designed for consistent instrument calibration, this non-hazardous kit includes a blank and three standards, a plastic case, instructions, and a Certificate of Analysis. With a two-year shelf life, it ensures reliable, hassle-free lab performance.






| 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 months ago
1 month ago