Beetrode®

pH Electrodes with 100-micron sensing tips!

Key Points

  • NEW super-miniature, super-fast coated wire pH electrodes.
  • 100-micron diameter - ideal for monitoring fast pH changes in very small places.
 
 

A solid state pH sensor with ideal characteristics over a wide pH range. Exhibits a larger Eo than conventional glass electrodes. Requires a separate reference electrode such as WPI's Dri-Ref Series. Beetrodes (except the NMPH2) connect to your pH meter via a BNC-terminated cable. Beetrodes generate mV readings on standard pH meters. To obtain pH-scale readings on standard pH meters, use BEE-CAL™, a small, battery-operated compensator (AA battery included) that adjusts the electrode offset potential so that Beetrodes will produce standard pH-scale readings. (NMPH2B requires A solid state pH sensor with ideal characteristics over a wide pH range. Exhibits a larger Eo than conventional glass electrodes. Requires a separate reference electrode such as WPI's Dri-Ref Series.

Beetrodes (except the NMPH2) connect to your pH meter via a BNC-terminated cable. Beetrodes generate mV readings on standard pH meters. To obtain pH-scale readings on standard pH meters, use BEE-CAL™, a small, battery-operated compensator (AA battery included) that adjusts the electrode offset potential so that Beetrodes will produce standard pH-scale readings. (NMPH2B requires ZBEECAL.)

BEETRODE SPECIFICATIONS
TIP DIAMETER 100 µ (0.1 mm)
TIP LENGTH 2 mm (approx.), except

5 mm (approx.) on NMPH5
BODY DIAMETER (NMPH 1, 3, 3L, 5) 0.187 in. (5 mm)
BODY LENGTH (NMPH 1, 3, 5) 1.875 in. (48 mm)
BODY LENGTH (NMPH 3L) 0.75 in. (19 mm)
RESPONSE TIME 1 s (90%) typical
pH RANGE 0-14
SLOPE Nernstian
RESISTANCE 100 k Ohms (max)
SELECTIVITY No significant interference by K+,

Na+, Ca++ in 0.1 to 1 M solutions


NMPH1* Beetrode -- 2 mm receptacle
NMPH2 Beetrode with 1 m cable (unterminated)
NMPH2B Beetrode w/ BNC cable, 1 m cable
NMPH3* Dental Beetrode, 45° Bend, 2 mm receptacle
NMPH3L* Dental Beetrode w/ 2 mm loop, 2 mm receptacle
NMPH5* Beetrode, 2 mm receptacle
BEECAL Beetrode Offset & Cable (BNC, 2 mm pin)
ZBEECAL PH750 Offset & Cable (BNC-F to BNC-M)
3508 BNC-to-US Standard Adapter
1358 BNC-to-2 mm Pin Adapter
*Requires BEE-CAL or 1358 BNC-to-2 mm Pin Cable (4-ft) for connection to a pH meter.

References