JBL O2 Refill

 Oxygen test (refill)

• Recommended Oxygen content:8mg/l at 25° C
• Test providing accurate readings of oxygen levels from 1 - 10mg/l in freshwater, saltwater and ponds.
• Important when algae preparations are used, as large amounts of oxygen are used when algae are eliminated.
• Recommended for use at night in densely planted aquariums, when large amounts of O2 are absorbed.
• For approx: 50 measurements.