Conductivity Meter electrodes invariably become coated with inorganic or organic impurities. This causes a loss of accuracy. Conductivity (cF, mS) or TDS measurements are used to gauge the total concentration of all salts (i.e. both beneficial and toxic) present in the nutrient solution. They cannot provide any detail on the concentrations of individual nutrients. Therefore, since a ‘satisfactory’ reading does not imply a balanced nutrient mixture (or provide information on the level of nuisance salts), it is wise to dump every 7-14 days. This is particularly necessary when using salty make-up water because such water causes nuisance chemicals to build up rapidly to toxic levels.
For Calibration of Conductivity (EC) and TDS Meters
Calibrates to 2.76mS/cm or cF 27.6 at 25oC (77oF)
Contains Potassium Chloride
Based on international (APHA) standard formula
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Note: Orders with more than one item are assigned a processing period in accordance with the item.
Before shipping, our team will perform an exhaustive inspection of the products you ordered. The majority of orders will be sent within 48 hours. The expected delivery time is between 3-7 days.
Returns
The stock is dynamic and we are unable to completely manage it due to the fact that several parties are involved, which includes our warehouse and factory. So the actual stock may fluctuate at any moment. Be aware that your order may be out of stock when the order is placed.
The period of time is 30 days. If you haven't received your item within 30 days, we are unable to offer either a return or exchange.
The item you purchase must be in its original packaging and be unused. You must have the item in its original packaging.
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