QiWei PH-20 and YUEFENG PHB-3 compare

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Model selection comparator If you have any questions, please click below Service	QiWei PH-20 PH meter (pen) 170.0 RMB China Detail	YUEFENG PHB-3 Pen acidity meter 220.0 RMB China Detail

Model comparison

Type	Pen style	Pen style
Range	0~14PH	0~14PH
Accuracy	Miscellaneous	Miscellaneous
Accessories

Parameter comparison

Measurement parameters
PH range	0.1~14pH
PH measurement Accuracy	±0.1pH
temperature compensation
Stability (zero drift)
input impedance
Storage function
Power	1.5V battery (LR44) * 4PCS
Dimensions	F40 * 185mm
Weight	88g
Standard electrode reagent
Allowable environment temperature	0~50℃
resolution	0.1pH	0.1pH
PH calibrated	PH: 25 ℃ three point calibrated (4.0, 6.9, 9.2)
temperature resolution	0.1℃(1℉)
Temperature measurement Accuracy	1℃
Temperature Measurement range	0~50℃/32~122℉

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