Product Overview
AquaChek Dual-Parameter Nitrate and Nitrite Test Strips - 25 Strips, Colorimetric, No Equipment Required
Condition
Unused, never opened. Expiration date printed on bottle: 09/2024. Bottle label intact with legible color chart, ppm scales, and directions. Markings confirmed: Cat. 27454-25, Nitrate Nitrogen 0-50 ppm, Nitrite Nitrogen 0-3 ppm, Made in the USA. Buyers should evaluate suitability for their application given the past expiration date before ordering.
Carefully packed and shipped same or next business day from our Idaho warehouse. Honest equipment and straightforward service.
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Product Overview
Hach 2745425 (also cataloged as AquaChek Cat. 27454-25) are dual-parameter colorimetric test strips for measuring nitrate nitrogen (NO3-N) and nitrite nitrogen (NO2-N) in water. Each bottle contains 25 strips. No reagents, measuring equipment, or technical training required - dip for one second, read nitrite at 30 seconds and nitrate at 60 seconds against the printed color chart on the bottle. Results are semi-quantitative.
Key Features
- Nitrate Nitrogen (NO3-N) range: 0 to 50 mg/L (ppm)
- Nitrite Nitrogen (NO2-N) range: 0 to 3.0 mg/L (ppm)
- 25 test strips per bottle
- Dual-pad strip: separate reagent pad for nitrate, separate pad for nitrite
- 1-second dip time; nitrite read at 30 seconds, nitrate read at 60 seconds
- Colorimetric, semi-quantitative results compared against printed color chart on bottle
- No additional equipment, chemicals, measuring, or cleanup required
- Made in the USA; Hach AquaChek brand
- Expiration date: 09/2024
Applications
- Pool and spa maintenance technicians checking for elevated nitrate or nitrite as a root cause of persistent chlorine demand or recurring algae problems that standard chlorine tests do not explain
- Homeowners and environmental consultants screening private well water or groundwater on-site for nitrate levels as a rapid first-pass indicator of fertilizer runoff or contamination
- Aquarium and pond keepers running routine water quality checks to catch rising nitrite during a nitrogen cycle event before fish show stress
- Educators and trainers using colorimetric test strips for classroom demonstrations of water chemistry and chemical indicator principles
Frequently Asked Questions
How many strips are in this bottle?
25 strips per bottle, confirmed on the label.
What is the expiration date and does it matter for my use?
The expiration date printed on the bottle is 09/2024. Chemical test strips use reactive chemistry that can degrade over time. For critical or regulatory applications, buyers should determine whether the past expiration date affects suitability. For educational demonstrations, training exercises, or non-critical screening, many buyers find strips like these useful past the printed date.
Does this strip test for both nitrate and nitrite at the same time?
Yes. The strip has two separate reagent pads - one for nitrite (read at 30 seconds) and one for nitrate (read at 60 seconds). A single dip produces readings for both parameters.
Is any additional equipment required?
No. The color chart is printed directly on the bottle label. Dip, wait, and compare. No meters, reagents, or lab equipment needed.
What is the equivalent AquaChek product number?
This product is cataloged as Hach 2745425 and AquaChek Cat. 27454-25. The model number 641426E is also associated with AquaChek Nitrate/Nitrite Test Strips and appears in the research as an equivalent product number.
A bottle of 25 strips, a printed color chart, a one-second dip - and you have an answer about what is actually in the water. Simple chemistry, still waiting to be put to work.
