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Water Quality for Autoclaves

The conductivity of water is usually expressed as micro Siemens/cm (µS/cm) The relation between conductivity and dissolved solids is approximately 2:1. It is recommended that the process water for an autoclave has a conductivity of no more than 15 µS/cm.  The equivalent TDS reading would be 7.5, a reading above that means the water is not suitable for use.

Autoclave internals

The damage  poor water quailty can do to your autoclave.

The TDS Meter measures the amount of Total Dissolved Solids (TDS) in a solution. Since dissolved ionized solids like salts and minerals contribute to the electrical conductivity of a solution, a TDS meter typically report the weight ratio between the dissolved solids and the total weight of the solution. The unit used by TDS meters is parts per million (ppm). For example, a water sample of 1 kg containing 1 mg of dissolved solids is equal to 1 ppm TDS.