CHEMetrics K-6901 Nitrate Test Kit

Available across Canada through Cambridge Environmental Products, the CHEMetrics K-6901 is a self-contained nitrate test kit for direct measurement of nitrate in undiluted water samples, using the zinc reduction/azo dye formation method. It's built for drinking water, private well, groundwater, source water, and general environmental testing where you need a field-ready visual result without instrumentation. This listing also carries the R-6901 reagent refill and both replacement comparators, C-6902 (low range) and C-6908 (high range), so existing kit owners can restock or replace parts without buying a whole new kit.

Choose Your Option

Which Option Should I Choose?

• Never owned this kit before? Get the Complete Kit (K-6901). It includes everything you need, both comparators, reagents, and the sample accessories, in one case.
• Already own the kit and just running low on reagent? Get the Refill (R-6901). It works with the C-6902 and C-6908 comparators you already have.
• Already own the kit but your low-range comparator is lost or damaged? Get the Comparator, Low Range (C-6902) on its own.
• Already own the kit but your high-range comparator is lost or damaged? Get the Comparator, High Range (C-6908) on its own.

Why Choose This Kit?

• No instrumentation required: Results are read visually against the comparator, so you get a nitrate reading in the field without carrying a photometer or spectrophotometer.
• Dual range in one kit: The low-range comparator resolves down to 0.01 ppm for trace-level work, while the high-range comparator covers up to 1.4 ppm, so one kit handles both clean and moderately elevated samples.
• Cadmium-free method: Uses a zinc reduction step rather than cadmium reduction, which simplifies waste handling compared to older cadmium-based nitrate methods.
• Restock without waste: Once your comparators are on hand, the R-6901 refill lets you keep testing without paying for hardware you already own.

Common Applications

Technical Specifications

Use & Safety Notes

• This kit's reagents are classified as hazardous for shipping and handling purposes; follow the instructions included with the kit and the SDS, available on request
• Contains no mercury
• Store reagents and refills as directed in the included instructions to maintain shelf life

FAQs

What is the K-6901 kit used for?
It's a visual nitrate test kit for undiluted water samples, used for drinking water, well water, groundwater, and general environmental nitrate testing.

What's the difference between the Complete Kit, the Refill, and the Comparators?
The Complete Kit (K-6901) includes everything: reagents, both comparators, and hardware. The Refill (R-6901) is reagents only, for kit owners restocking. The Comparators (C-6902 low range, C-6908 high range) are single replacement parts, sold separately depending on which one needs replacing.

Do I need to buy a comparator if I already own the kit?
No, only if your existing comparator is lost, cracked, or faded. The Refill (R-6901) works with the comparators you already have.

What's the difference between the C-6902 and C-6908 comparators?
The C-6902 is the low-range comparator (round format, 0 to 0.1 ppm). The C-6908 is the high-range comparator (flat format, 0 to 1.4 ppm). They replace different comparators from the kit and aren't interchangeable with each other.

How many tests does one kit or refill provide?
30 tests per Complete Kit and 30 tests per Refill.

Is this kit suitable for private well or drinking water testing?
Yes, it's designed for direct measurement of nitrate in undiluted water samples, including private well and drinking water testing.

What is the measurement range?
0 to 0.1 ppm as N on the low range (C-6902 comparator), and 0 to 1.4 ppm as N on the high range (C-6908 comparator, included in the Complete Kit).

Does this kit contain mercury?
No.

Is the CHEMetrics K-6901 available in Canada?
Yes, through Cambridge Environmental Products, priced in CAD and shipped across Canada with no cross-border fees or delays.