Hanna Instruments HI 83099 - Manual (Page 62)

123 122 Silver
• Add exactly 1.0 mL of HI 93737B-0 Buffer reagent to the second
beaker (the sample) and swirl gently to mix. Press Timer and the
display will show the countdown prior to adding reagent C or,
alternatively, wait for 2 minutes.
• Then add exactly 1.0 mL of HI 93737C-0 Indicator reagent to
each beaker and swirl. Press Timer or, alternatively, wait for
2 minutes.
• Then, in both cases, add 1.0 mL of HI 93737D-0 Fixing reagent
to each beaker and swirl. Press Timer or, alternatively, wait for
2 minutes.
• Fill one cuvette up to the mark with 10 mL of the blank.
• Add 3 drops of Dispersing Agent (HI 93703-51), replace
the cap and invert gently to mix for about 10 seconds.
• Place the cuvette into the holder and close the lid.
# 2
# 2 # 1
# 2 # 1
# 1
# 1
10 mL
Silver
SILVER
SPECIFICATIONS
Range 0.000 to 1.000 mg/L
Resolution 0.005 mg/L
Accuracy ±0.020 mg/L ±5% of reading at 25 °C
Typical EMC ± 0.001 mg/L
Deviation
Light Source
Tungsten lamp with narrow band interference filter @ 575 nm.
Method Adaptation of the PAN method. The reaction between silver and reagents causes an
orange tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93737 A-0 Buffer Reagent A 1 mL
HI 93737 B-0 Buffer Reagent B 1 mL
HI 93737 C-0 Indicator Reagent C 2 mL
HI 93737 D-0 Fixing Reagent D 2 mL
HI 93703-51 Dispersing Agent 4-6 drops
REAGENT SETS
HI 93737-01 Reagents for 50 tests
HI 93737-03 Reagents for 150 tests
For other accessories see page 132.
MEASUREMENT PROCEDURE
• Select the Silver method using the procedure described in the Method Selection section (see page 12).
Note: for best results perform your tests between 20-24°C.
• Fill two graduated beakers with 25 mL of sample.
• Add 1.0 mL of HI 93737A-0 Buffer reagent to one beaker
(the blank) and swirl gently to mix.
# 1 # 2
# 1