Hardness, Total Low Range - Hanna Instruments HI83300 Instruction Manual

8.27. HARDNESS, TOTAL LOW RANGE

SPECIFICATIONS
Range 0 to 250 mg/L (as CaCO
Resolution 1 mg/L
Accuracy ±5 mg/L ±4% of reading at 25 °C
Light Source LED with narrow band interference filter @ 466 nm
Method Adaptation of the EPA recommended method 130.1.
REQUIRED REAGENTS
Code Description
HI93735IND‑0 Hardness Indicator Reagent
HI93735A‑LR Hardness Low Range Reagent A
HI93735B‑0 Hardness Buffer Reagent B
HI93735C‑0 Fixing Reagent
REAGENT SETS
HI93735‑00 Reagents for 100 tests (LR, 0 to 250 mg/L)
HI93735‑0 Reagents for 300 tests (LR ‑ 100 tests, MR ‑ 100 tests, HR ‑ 100 tests)
For other accessories see page 200.
MEASUREMENT PROCEDURE
• Select the Hardness Total LR
procedure described in the Method Selection section
(see page 18).
• Add 0.5 mL of unreacted sample to the cuvette. Add
0.5 mL of HI93735IND‑0
• With the plastic dropper fill the cuvette up to the
10 mL mark with HI93735A‑LR
Range Reagent A.
• Add two drops of HI93735B‑0
Reagent B. Replace the cap and invert 5 times to
mix.
)
3
method using the
Hardness Indicator Reagent.
Hardness Low
Hardness Buffer
Quantity
0.5 mL
9 mL
2 drops
1 packet
97