The PH8500-DP from Apera Instruments is a handy and easy-to-use measuring device for the determination of pH value, ORP (electrode available separately, e.g. 301Pt-C) and temperature. It is particularly suitable for measuring dairy products (milk, yoghurt, buttermilk, etc.) and other liquid foods such as jam, barbecue sauce, syrup, etc.. The LabSen® 823 pH electrode included in the scope of delivery has been specially developed to carry out fast, precise and reproducible measurements without the diaphragm being blocked by proteins or sulphides. The electrode has an integrated temperature sensor, which enables automatic temperature compensation (ATC). The PH8500-DP is protected by a silicone cover and is waterproof and dustproof (IP57), making it particularly well suited for field use, even in harsh environments. In addition, the meter has a memory function and GLP data management with storage for up to 500 memory groups. It can be connected to a PC or laptop via USB to either read out the memory groups or perform real-time storage.

Equipped with the LabSen® 823 pH electrode for fast and precise measurements of dairy products and other liquid foods
Silicone case provides safe & firm grip and protects from shocks
Waterproof and dustproof (IP57) for use in harsh environments
Fold-out stand for convenient indoor operation
Quick and easy 1- to 3-point calibration
Large, illuminated LCD simultaneously displays conductivity value and temperature, as well as additional measurement and calibration information
GLP data management (500 memory groups) with data output via USB, also with real-time storage function
Self-diagnosis supports calibration or troubleshooting

The meter is RoHS and EC certified and has a 3 year warranty (6 months on the electrode).

Weight	1.8 kg
Dimensions	36 × 27 × 8 cm

Electrode

The LabSen® 823 from Apera Instruments is a pH electrode with integrated temperature sensor and is manufactured using proprietary Swiss sensor technology and materials. It is specially designed to measure proteinaceous solutions, so it is suitable for dairy products such as milk, cream, yogurt and other liquid food products such as mayonnaise, jam, BBQ sauce, syrup and so on.

Silver ion trap reference system + protelyte electrolyte – The LabSen 823 electrode is equipped with a silver ion trap reference system and a protelyte reference solution. In addition to the long-life reference system, a silver ion trap is incorporated to prevent protein blockage or contamination of the diaphragm.

LabSen S-Type Hemispherical Glass Diaphragm – Thanks to the low-resistance and rugged glass diaphragm, the electrode delivers fully stabilized readings in 15 to 30 seconds, yet is up to 10 times more rugged than conventional products, significantly reducing the likelihood of the electrode breaking during impacts. It can be used at temperatures up to 100°C.

Patented pH/Temperature Combination Structure – The temperature probe is placed in an independent cavity under the pH glass membrane. With the built-in thermally conductive medium, the temperature sensing capability can be increased by 40%, which significantly improves the response time and stability of the pH electrode.

Measuring range	(0 ~ 14) pH	Electrolyte	Protelytes
Recommended operating temperature	(-5 ~ 100) °C	Storage solution	Protelyte
Shank material	lead-free glass	Temperature sensor	NTC 30kΩ
Diaphragm type	S	Electrode dimension	(Ø12×120) mm
Diaphragm resistance	<200MΩ	Connection	BNC/RCA
Reference system	Silver ion trap	cable	Ø5mm×1m
Diaphragm	Ceramic x 3

Technical Specifications

pH	Measuring range	-2.00 to 16.00 pH
	Resolution	0.1/0.01 pH
	Accuracy	±0.01 pH ±1 digit
	Temperature compensation	0 to 100 °C (automatic or manual)
	Calibration	1- to 3-point, automatic
mV	Measuring range	±2000 mV
	Resolution	0.1/1 mV
	Accuracy	±0.1% F.S ±1 digit
temperature	Measuring range	0 to 100 °C
	Resolution	0,1 °C
	Accuracy	±0.5 °C ±1 digit
Other	Data storage	500 data records
	Data content	Numbering, date, time, measured value, unit, temperature
	interface	USB
	Power supply	3 x AA batteries / DC 5V (USB port)
	Enclosure protection class	IP57
	Electrode connections	BNC (pH/ ORP), 8-pin (conductivity), RCA (temperature)
	Dimensions / Weight	88x170x33 mm / 313g with case: 360x270x76 mm / 1.7 kg