http://www.ebay.com/itm/PH-009-Mini-IA-0-0-14-0pH-Pen-Type-pH-Meter-Digital-Tester-Hydro-Screwdriver-TC-/181400369499?pt=US_Garden_Tools&hash=item2a3c4df95b
http://www.ebay.com/itm/Digital-pH-Meter-Tester-Thermomete-r-Temperatur-e-C-/201129770154?hash=item2ed444bcaa&item=201129770154&pt=Motors_Automotive_Tools&vxp=mtr
http://www.ebay.com/itm/Waterproof-Digital-pH-Meter-Tester-Thermometer-C-F-ATC-Electrode-Dual-Display-/161281865062?pt=LH_DefaultDomain_0&hash=item258d25f566
Temperature plays a very important role to ensure 100% accuracy in reading results. With built-in ATC pH value is automatically adjusted in temperature between 0~50°C (or 32~122°F) so you don't need to worry about the effect of temperature change on pH level.
Pa iskopao/izbušio tim motornim bušačem. I uopće nije komplicirano, kad uhvatiš ritam. Neke rupe su bile čak i 70 cm duboke. I začudo, sa širim svrdlom ide duplo lakše