User Guide

20
filter
disc
• Mix well using the spoon
and then wait for 5
minutes.
• Unscrew the filter assembly,
put a filter disc inside and
close it again.
• Connect the filter assembly
to the 60 mL syringe by
the screw rim.
• Take off the syringe
plunger and fill the syringe
with the sample to be
filtered. Pour the sample
gently, trying to avoid
transferring of the actived
carbon to the syringe.
• Reinsert the plunger and
filter the solution into the
100mL beaker by pushing
gently the syringe plunger.
The sample is now ready.
Note: Filter at least 40 mL of solution if all the four parameters
have to be tested. If the solution is still turbid or colored, treat it
again with a packet of active carbon. After use, throw the filter
disc away and wash the syringe and the filter assembly well.
Always use a new disc for another sample.
NUTRIENTS SOLUTION (MR):
• Use the graduated cylinder to measure exactly 20 mL
of sample.
41
SPECIFICATIONS
Range 0.0 to 50.0 mg/L
Resolution 0.5 mg/L
Accuracy ±2.5 mg/L ±4% of reading
Light Source Tungsten lamp with narrow band interference
filter @ 525 nm
Method Adaptation of the Standard Methods for the
Examination of Water and Wastewater, 18
th
edition, Amino Acid method. The reaction be-
tween phosphorus and reagents causes a blue
tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93706A-0 Molybdate 10 drops
HI 93706B-0 Amino Acid Powder 1 packet
REAGENT SETS
HI 93706-01 Reagents for 100 tests
HI 93706-03 Reagents for 300 tests
For other accessories see page 56.
MEASUREMENT PROCEDURE
• Select the program number 8 “Phosphorus MR” on the secondary
LCD by pressing PROGRAM M and L.
• Fill the cuvet with 10 mL of unreacted
sample (up to the mark) and replace
the cap.
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and “SIP” will blink on
the display.
Note: for sample preparation follow the NUTRIENTS SOLUTION (MR)
procedure at page 20.
Phosphorus MR
PHOSPHORUS MEDIUM RANGE
10 mL