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For aquarium enthusiasts
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Mini-photometer Checker HC nitrates allows the measurement of nitrates in seawater from 0.50 to 50 mg/L with an accuracy of ± 0.25 mg/L.
Reagents for Checker nitrates in seawater, narrow range (HI781), 25 tests + 25 filter papers
Ref: HI781-25
Seawater Nitrate Standard Solutions – HI781-11 provides a simple solution for checking the HI781 Seawater Nitrate Checker .
This high-quality set of standards is manufactured in our state-of-the-art facilities and comes complete with a Certificate of Analysis. The Certificate of Analysis provides the lot number, reference values and expiry date to ensure traceability when certifying the Checker®HC® Mini Photometer.
Pre-order, available end of November.
The HI740271 is a replacement filter holder with lock (1 piece) for use with the HI781 Nitrates Checker.
Nitrates develop from fish droppings and food scraps. They strongly promote the proliferation and growth of algae and cause stress to fish at a relatively high concentration.
Optimal content: less than 10 mg/L
Above 50 mg/L, it is recommended to partially replace the water with tap water low in nitrates (also to be measured before addition!)
HI781 comes with 2 measuring cuvettes and their caps, reagents for 25 nitrate tests, 25 filter papers, 1 filter holder, 1 mixing bottle with cap, 1 5 mL syringe with tip, 1 10 mL syringe, 1 graduated syringe of 1 mL, 1 plastic filler pipette, 1 16 gauge blunt needle and battery.
Specifications | HI781 |
Range | 0.50 to 5.00 mg/L (NO3-N) 5.0 to 50.0 mg/L (calculated) with dilution |
Resolution | 0.01mg/L |
Accuracy (at 25°C) | ±0.25mg/L ±2% of reading ±2.5 mg/L ± 5% of calculated reading with dilution |
Method | Colorimetric method |
Light source | 525nm LED |
Light detector | Silicon photocell |
Battery / Self-extinguishing | 1 x 1.5 V AAA / After 10 minutes of non-use |
Dimensions / Weight | 86 x 61 x 37.5mm / 64g |
Top (Translated review)
Mini-photometer Checker HC nitrates allows the measurement of nitrates in seawater from 0.50 to 50 mg/L with an accuracy of ± 0.25 mg/L.