น้ำยาบัพเฟอร์ น้ำยาปรับตั้งค่า ORP Buffer Solution HI7021L HANNA
Buffer Solution , ORP buffer solution
ORP Solution for Platinum and Gold Electrodes. Reads 240 mV @ 25°C/77°F ORP standard solutions allow you to test the precision of ORP electrodes.
If the reading is outside the indicated interval, clean and condition your ORP electrode in HANNA® pretreatment solution. Use HI 7092 for oxidizing or HI 7091 for reducing pretreatment.
Description ORP Test Solution at 240 mV (@20°C)