Bluelab Limited, formerly NZ Hydroponics International, have long had their own web sites...
including the famous Truncheon EC Conductivity stick nutrient strength meter:
Sound advice for Commercial Growers:
NZero Engineering and Gruebner Electronic Remedies are proud that our engineering and chip programming played a significant part in Bluelab products.
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Created 11 Nov, 1996 - Last updated: 2016 February