Hanna instruments NITRITE BROCHURE

Diazotization Method

Easier to use and more accurate than chemical
test kits

Adaptation of EPA Diazotization method

Accuracy ±4% of reading ±10 ppb

1 ppb resolution (200 points)

Large, easy to read digits

Auto shut-off

Dedicated to a single parameter

Designed to work with HANNA’s powder reagents

Uses 10 mL glass cuvettes

Small Size, Big Convenience

Weighing a mere 64 g (2.25 oz.), the Checker®HC
easily fits into the palm of your hand or pocket

Use for quick and accurate on the spot analysis

Single button operation: Zero and Measure

Operated by a single AAA battery

SHOWN ACTUAL SIZE

ACCURATE AND AFFORDABLE NITRITE ULR MEASUREMENT

Nitrites are an inte rmediate form of nitroge n,
produced when ammonia is converted into nitrate
during the Nitrogen Cycle. As organic matter decays, it
produces ammonia. Highly toxic ammonia is converted
into nitrite by bacteria, and the nitrite is converted
into nitrate by another bacteria. Nitrite is dangerous
to aquatic life if it builds up, causing tissue damage
that can lead to illness and death.

The HANNA HI 764 Checker®HC bridges the gap
between simple chemical test kits and professional
instrumentation. C hemical test kits are not very
accurate and only give 5 to 10 points resolution while
professional instrumentation can cost hundreds of
dollars and can be time consuming to calibrate and

maintain. The HANNA HI 764 Checker®HC is accurate
and affordable.

This Checker®HC features an accuracy of ±4% of reading
and uses an adaptation of EPA Diazotization method.

The contoured style of this Checker®HC fits in your
palm and pocket perfectly and the large LCD is easy to
read. The auto shut-off feature assures the battery
life will not be drained if you forget to turn it off.

The HI 764 Checker®HC is extremely simple to use.
First, zero the instrument with your water sample.
Next, add the reagent. Last, Place the vial into the
HI 764 Checker®HC, press the button and read the
results. It’s that easy.