เครื่องวัดค่า pH (pH Meter) และ Buffer Powder ในการ Calibation
เครื่องวัดค่า pH (pH Meter) และ Buffer Powder ในการ Calibation
ราคาเครื่องละ 350 บาท
รายละเอียดสินค้า
~Key Features~
จอแสดงผล : LCD Digital
ค่าความถูกต้อง: 0.01
ความละเอียด: 0.01
ใช้วัดในช่วงอุณหภูมิ: 0~60°C
ช่วงในการวัด: 0.00~14.00
Probe Type: Precision glass bulb electrode
(ในแพคเกจไม่มีถ่าน)
Power Supply:2*1.5V LR44 Batteries(Not included!!!)
Operation:
Step 1.Remove protective cap.
Step 2.First rinse the electrode with distilled water and suck it with filter paper.
Step 3.Turn the meter on by pressing “ON/OFF” key.
Step 4.Immerse the pH meter electrode in the solution to be tested (should not be over the immersion line).
Step 5.Stir gently and wait around 30 seconds till the reading stabilizes.
Step 6.After finishing clear the electrode with pure water turn the meter off by pressing “ON/OFF” key.
Step 7.Always replace the protective cap after use.
Calibration：
1.Turn on PH meter
2.Disolve each buffer solution in 250ML of distilled water
3.Immerse the electrode into the PH 6.86 solution(under the temperature of 25)
4.Press the “CAL”(calibration)button for 5 seconds and release
-Display will start flashing 6.86
-Wait until the display stops flashing.
Rinse the electrode with distilled water and dry it with filter paper.
5. Immerse the electrode in PH 4.00 solution
-Press“CAL”button for 5 secondsthen press and release immediately second time
-Reading will start flashing 4.00
-Wait until display stops flashing
Rinse and dry the electrode with distilled water as before.
6.Place the meter back to the buffer solution to test calibration.If incorrectplease repeat the calibration
7.If approximate PH of your test solution is known to be above 7.0calibrate the meter using 6.86 and 9.18 solution. To do thisplease follow the calibration chartThe third step is the calibration method for 9.18 point.
