YSI 9300 Photometer - Manual (Page 97)

Reagents and Equipment
YSI Sulfate Turb Tablets
YSI 9300 or 9500 Photometer
Round Test Tubes, 10 ml glass (PT 595)
Test Procedure
1 Fill test tube with sample to the 10 ml mark.
2 Add one Sulfate Turb tablet, crush and mix to dissolve. A cloudy solution indicates
the presence of sulphate.
3 Stand for five minutes then mix again to ensure uniformity.
4 Select Phot 32 on photometer.
5 Take photometer reading in usual manner (see photometer instructions).
6 The result is displayed as mg/l SO
4
.
Caution
YSI Sulfate (Turb) tablets each contain 20 mg Barium Chloride. These tablets are
harmful if ingested. Avoid handling tablets whenever possible and wash hands
after use.
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