Pack Size: box of 100 strips
Hazard Class /UN Number: Not Restricted
Storage Temp: Room Temperature
Test sticks for the semi-quantitative determination of the total hardness (Ca2+, Mg22+), carbonate hardness (HCO3-, CO32-) and the pH value of aquarium water. The total hardness of a water is caused by its content of calcium and magnesium salts (Ca2+, Mg2+). When measuring the total hardness, the sum of these salts is determined. The carbonate hardness is a part of the total hardness and is caused by that portion of alkaline earth metals which are equivalent to the carbonate and hydrogen carbonate ions (CO32-, HCO3-) the buffer properties of the water. Water with a low carbonate hardness is not sufficiently buffered, therefore the pH value can fluctuate easily. The pH value indicates whether the water is acidic, alkaline or neutral. Water with a pH of 7 is called neutral. Towards lower pH values the water becomes increasingly acidic, towards higher pH values it becomes more alkaline.
Gradation: Carbonate Hardness: 0 · 4 · 8 · 13 · 19 · 25 °e / pH: 6.4 · 6.8 · 7.2 · 7.6 · 8.0 · 8.4 / Total Hardness: 0 · 6.3 · 12.5 · 18.8 · 25.0 · 31.3 °e
Color change: Carbonate Hardness: bright green → blue / pH: yellow → red / Total Hardness: green → red
Evaluable on reflectometer: No
Method: Carbonate hardness - Mixed indicator / pH - mixed indicator / Total hardness - EDTA
Additional reagent: No
Storage temperature: 4-30 °C / 39-86 °F
Shelf life (from production): 2.5 Year(s)
Scope of delivery: 100 test strips in a tube, instruction leaflet
Gross weight (incl. packaging): 45.4 g / 0.1 lbs
Packaging dimensions: 40 x 40 x 120 mm / 1.57 x 1.57 x 4.72 Inch
Hazardous material: No
Instruction Sheet
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