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Dissolved Oxygen Lab

AP1488
Demonstrate the importance of dissolved oxygen in natural waters. Create your own samples, ...
$49.25

Soil pH Lab

AP1489
Determine the soil pH of known samples as well as your own samples. ...
$61.40

Soil pH Lab (Refill)

AP1489R
REFILL for AP 1489, Soil pH Lab. ...
$24.40

Tapwater Hardness Lab

AP1486
Measure the hardness of a known sample and demonstrate the aesthetic effects of ...
$102.60

Water pH Lab

AP1487
Learn the importance of pH and how it is adjusted in various water ...
$77.55

Water pH Lab (Refill)

AP1487R
 REFILL for AP 1487, Water pH Lab. ...
$32.15