Catalog No.	Display	Temp.Compensation	Auto BufferRecognition & Calibration
PRYG-313E	LED 4 Digit	ATC	3 Points, Automatic(4.00, 7.00 & 9.20 pH)
PRYG-313C	LCD 16×2Alphanu-meric	ATC	3 Points, Automatic(4.00, 7.00 & 9.20 pH)
Power Supply : 12V/ 500mA External Adopter & Battery backup unit
Accessories: pH Electrode, Temp. Sensor, Buffer Solution, Carrying Case & Manual.

Catalog No.			PRYG-310( Economical)	PRYG-311	PRYG-312	PRYG-314
Display			4 Digit LED	4 Digit LED	4 Digit LED	Dual DisplayLED + LCD
pH	Range		0 – 14 pH	0 – 14 pH	Specification same as per NU-311+ Manual & ATC (Automatic Temp. Compensation) supplied with Temp. Sensor Resolution : 0.1ºC	Specification same as per NU-312+ LED & LCD : 16×2 Alphanumeric Display + ATC
	Resolution		0.01 pH	0.01 pH
	Accuracy		± 0.01 ± 1 digit	± 0.01 ± 1 digit
mV	Range		0 ± 2000 mV	0 ± 2000 mV
	Resolution		1 mV	1 mV
	Accuracy		± 1 mV	± 1 mV
Temp.	Range		Not Available	0 to 100ºC
	Resolution			1ºC
	Accuracy			± 1ºC
TemperatureComp.		Manual By knob( Temp. Scale ) Settable		ManualDigitally Settable	ATC	ATC
Auto BufferRecognition & Auto Buffer Calibration			2 Points, Automatic(4.00, & 7.00)	3 Points, Automatic(4.00, 7.00 & 9.20 pH)	3 Points,Automatic (4.00, 7.00 & 9.20 pH)	3 Points, Automatic(4.00, 7.00 & 9.20 pH)
Power Supply : 12V/ 500mA External AdopterComplete Accessories : pH Electrode Combined, Electrode Stand, Buffer Solution, Dust Cover & Manual.