J jamie882013 New Member Jun 6, 2014 #1 http://www.ebay.co.uk/itm/Quality-Digital-PH-EC-TDS-Temperature-Tester-Conductivity-Meter-Hydroponics-/390249625099?pt=UK_Baby_Baby_Feeding_Bottle_Warmers_Coolers_LE&hash=item5adcb0b60b
http://www.ebay.co.uk/itm/Quality-Digital-PH-EC-TDS-Temperature-Tester-Conductivity-Meter-Hydroponics-/390249625099?pt=UK_Baby_Baby_Feeding_Bottle_Warmers_Coolers_LE&hash=item5adcb0b60b