฿1,658.50
		Buffer solution pH 4.01, color-coded, 500 ml bottle, ± 0.01 pH, Certificate of Analysis
	฿2,889.00
		Buffer Solution pH 4.01, 3.78L (Gallon), ±0,01pH,
	฿2,407.50
		Buffer Solution pH 5.00
	฿2,889.00
		Buffer Solution pH 6.86, 3.78L (Gallon), ±0,01pH,
เครื่องวัดความเป็นกรด-ด่าง/โออาร์พี
	฿1,123.50
		Buffer Solution pH 7.01
	฿1,658.50
		Buffer solution pH 7.01, color-coded, 500 ml bottle, ± 0.01 pH, Certificate of Analysis
	฿2,889.00
		Buffer Solution pH 7.01, 3.78L (Gallone), ±0,01pH,
	฿2,889.00
		Buffer Solution pH 9.18, 3.78L (Gallone), ±0,01pH,
	฿3,745.00
		Standard-Leitfähigkeitslösung 12880 µS/cm, 3.78L Kanister (Gallone)
	฿3,745.00
		Standard-Leitfähigkeitslösung 1413 µS/cm, 3.78L Kanister (Gallone)
 HI1297D - pH/ORP-Electrode
HI1297D - pH/ORP-Electrode						 HI1131B - Combination pH Electrode
HI1131B - Combination pH Electrode						 
				 
				 
				 
				 
				 
				 
				 
				 
				 
				 
				