Test Procedures
TURBIDITY
ABSORPTION METHOD • NO REAGENTS REQUIRED
Turbidity is a measure of water clarity and is independent of color. Turbidity is caused by
undissolved and suspended solids. Mud, silt, algae, and microorganisms can all cause
turbidity. Turbidity is a gross measurement of water quality.
APPLICATION:
Surface and industrial waters for non-compliance
monitoring. (For compliance monitoring at low turbidity
levels, use a commercial .)
RANGE:
0–400 FTU
MDL:
2 FTU
METHOD:
Absorptimetric
SAMPLE HANDLING &
PRESERVATION:
Measure sample as soon as possible after collection.
INTERFERENCES:
Check for stray light interference
PROCEDURE
Use universal sample holder.
1. Press and hold
ON
button until spectrophotometer turns on.
2. Scroll to and select
PROGRAMMED TESTS
.
3. Scroll to and select
ALL TESTS
(or another sequence containing
98 Turbidity
) from
TESTING MENU
.
4. Scroll to and select
98 Turbidity
from menu.
5. Rinse a clean tube (0290) with deionized water (turbidity free). Fill to the 10 mL line
with deionized water.
6. Insert tube into chamber, close lid and select
SCAN BLANK
.
7.
Rinse a second clean tube (0290) with sample water. Fill to the 10 mL line with
sample. Cap tube. Wipe off excess water and fi ngerprints. Shake to resuspend
particulate matter. Remove all bubbles before measurement.
8. Insert tube into chamber, close lid and select
SCAN SAMPLE
. Record result.
Turbidity measurements should be taken as soon as possible after sample has been
collected.
9. Press and hold
OFF
button to turn spectrophotometer off or press
EXIT
button to exit
to a previous menu or make another menu selection.
NOTE: For the most accurate results, the sample should be at 25±4°C.
SMART Spectro 2 Test Procedures 05.02.16
TURBIDITY
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