16/07/2021
Delay in the shipment of KRISTALL stations
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08/07/2021
Circular letters №13
Added a new circular letter No. 13 pH-the electrode is not calibrated.
15/06/2021
Circular letter No.12
Added new circular letter No. 12 Topping-up terminals. The use of Terminals 1 and 2 «TOPPING-UP» of the CRYSTAL station controller and delays for turning on the dos