Beetrode ® with 100-micron sensing tips! Micro pH Electrodes ● NEW—IMPROVED—super-miniature, superfast coated wire pH electrodes ● 100-micron diameter — ideal for monitoring fast pH changes in very small places NMPH3 NMPH2B BIOSENSING N H2 MP NM 3L PH 1 PH NMP NM H5 Beetrode® is 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.) BEE-CAL ZBEECAL 1358 TIP DIAMETER TIP LENGTH 3508 BEETRODE SPECIFICATIONS BODY DIAMETER (NMPH 1, 3, 3L, 5) BODY LENGTH (NMPH 1, 3, 5) BODY LENGTH (NMPH 3L) RESPONSE TIME pH RANGE SLOPE RESISTANCE SELECTIVITY DRIFT 100 µ (0.1 mm) ~2 mm, except ~2.5 mm on NMPH3L ~5 mm on NMPH5 0.187 in. (5 mm) 1.875 in. (48 mm) 0.75 in. (19 mm) 1 s (90%) typical 0-14 Nernstian 100 kΩ (max) No significant interference by K+, Na+, Ca++ in 0.1 to 1 M solutions < 2.5 mV / 5 min. 64 UK: Tel: +44 (0)1462 424700 • wpiuk@wpi-europe.com 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 SYS-BEECAL Beetrode Offset & Cable (BNC, 2 mm pin) ZBEECAL Bee-Cal Level Shifting Device 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. World Precision Instruments www.wpiinc.com Germany: Tel: +49 (0)30-6188845 • wpide@wpi-europe.com US: Tel: 941-371-1003 • sales@wpiinc.com