TDS (Total Dissolved Solids) indicates the amount of dissolved solids in the water, and it is expressed in PPM (parts per million). The lower the number, the more pure the water is. In the us tap water, many substances are dissolved. The more substances there are to be resolved, the higher is the hardness (GH) and at the same time, the higher is the conductivity(ás / cm).
But it is important: Even for solutes that are not directly in the water hardness affect it, but it is in the water. For example, the dissolved minerals, metals, salts, nutrients, waterverbeteraars, waste, feed, etc.
What the meter does is to measure the conductivity of the water. Clean water is led off. The more substances there are to be resolved, the higher the conductivity is. This is converted to total dissolved solids (TDS), thus, we get an insight into the quality of the water and the contaminants in it. Use this TDS meter to determine whether or not there is a change in the water that needs to be done.
Technical data sheets of the examples:
Pure water has a TDS of 0 ppm,
Osmosis water has a TDS of 5 to 15 ppm
Mineral water/pure water has a TDS < 50 ppm
Dutch tap water has a TDS of 100 to 250 mm (in Belgium, 500)
In the tank:
In an aquascape, located a distance of between 100 and 140 ppm (=GH 5-8)
With the use of stones like Seiryu stones, the TDS will increase, because the stones are calcium in the water issue. By making use of these TDS meters, it is one to be seen whether or not the aquarium is a waterwissel to do so. with osmosis water)
Evaporation:
In an aquarium, it is always a loss of water due to evaporation. The Water evaporates but the dissolved salts remain behind. In proportion to the increase in Total dissolved solids. With this TDS meter to determine if the concentrations are too high to be changed, it will have to be with the osmosis water.
A shrimp kweekopstelling:
Incorrect TDS / conductivity value can have a negative impact on the health and development of the shrimp. The majority of shrimp at a value of 150-200 ppm is ideal.
TDS Range: 0-9990 ppm
Operating temperature Range: 0 - 80 degrees Celsius
Resolution TDS: 1 ppm (0 999 ppm) above 10 ppm
Pre-calibrated: 342 ppm) (manually calibrated)
Resolution-temperature: 1 ° c
Accuracy: ±2%
Power supply: 2 x 1.5 V (included)
Size: 155 x 31 x 23 mm)
Weight: 76 grams
Special features: shuts off automatically after 10 minutes automatic temperature compensation.
Geeft een indicatie, maar aangezien de temperatuur meting behoorlijk afwijkt laat de nauwkeurigheid van de meting te wensen over. Inmiddels een ander, wat duurder model besteld.
de meter was snel geleverd en werkt super
deze TDS meter zou (deze regel is intussen verwijderd uit de beschrijving) te kalibreren zijn. dit is niet zo. dus u hoeft er ook geen kalibratie vloeistof bij te kopen. verder geeft hij wisselende waarden aan in de kalibratie vloeistof en in het aquarium water. ik ga op zoek naar een goede TDS meter, dan maar wat duurder. hier heb je niets aan.
TDS wordt snel en goed gemeten waardoor ik weet wat ik aan het water moet toevoegen om de perfecte waardes te krijgen. Temperatuur metingen zijn erg traag en duurt mij te lang. Maar hiervoor heb ik de meter ook niet gekocht.
