Kwik-Tip Ion selective electrodes ● Superior, stable PVC membrane ● Fast response ● 2mm diameter tips ● Interchangeable tip holder ™ Each kit includes three electrode tips. ast e, f ical! at cur conom Ac e and BIOSENSING These highly stable electrodes accurately measure calcium, potassium, hydrogen and TPP ion activity. Tips consist of 2 mm diameter plastic tubes sealed at one end with an ion-sensitive membrane. After filling with electrolyte solution, the user inserts the tube into the holder and connects it to a pH meter. Tips and holders are interchangeable, so one tip may be replaced with another sensitive to a different ion. Replacing a tip takes less than a minute. Electrode tips normally last several months, when stored properly in saline solution. When replacement is necessary, only the tip need be replaced. Kwik-Tip electrodes are available separately and as kits. Each “KWIK” Electrode Holder kit includes a reusable holder and three removable tips. In addition to a 4-foot BNC cable and an electrolyte filling syringe; “TIP” Electrode Kits contain three electrode tips for a specific ion. A separate reference electrode, such as WPI’s Dri-Ref™, is also required. If your pH meter requires a US Standard connector, also order Part #3508 (BNC-to-US pH Standard adapter). MicroFil filling syringe (included). COMPLETE KITS KWIKCAL-2 Holder & 3 Calcium Electrodes KWIKH-2 Holder & 3 Hydrogen Electrodes KWIKPOT-2 Holder & 3 Potassium Electrodes KWIKTPP-2 Holder & 3 TPP (Tetraphenylphosphonium) Electrodes HOLDERS AND REPLACEMENT TIPS KWIK-2 Electrode Holder with BNC cable TIPCA Calcium Electrode Tips (3) TIPH Hydrogen Electrode Tips (3) TIPK Potassium Electrode Tips (3) TIPTPP TPP+ (Tetraphenylphosphonium) Electrode Tips (3) ACCESSORIES 3508 BNC-to-US pH Adapter Also see Dri-Ref Reference Electrodes TIP ELECTRODE SPECIFICATIONS Part No. TIPCA TIPH TIPK TIPTPP Electrode Calcium Hydrogen Potassium TPP+ Color Code Green Orange Yellow Purple Recommended Filling Solution 0.1 M CaCl2 1 M Citric Acid, 0.01 M NaCl, pH 5.6 0.1 M KCl 10 mM TPP+ Min. Slope / Decade 28 mV 54 mV 54 mV 54 mV Concentration Range 0.1 M - 10-6.75 M pH 5.0 - 12 0.1 M - 10-4.5 M 0.001 M 10-4 M Selectivity Coefficients (-log) Na+ 5.5, K+ 5.4, Mg++ 4.9 Na+ 10.4, K+ 9.8, Ca++ 11.1 Na+ 4.0, Ca++ 3.9, Mg++ 3.0 K+ 6.0 Liquid Ion Exchangers CATIONS ION CATALOG NO. Na+ Mg++ K+ Ca++ USEFUL pH RANGE SLOPE LINEAR RANGE APPROX. EQUIV. 1.97 5.5 2.95 4.9 — 5.4 2.7 — 4-10 4-10 58 mV 28 mV pK 0-3 pCa 1-7 Corning ETH1001 477317 *Selectivity Coefficients are expressed here as -log Kij or pKij. SELECTIVITY COEFFICIENTS* 12.7 — — — 2-10 56 mV pH 4-12 — H+ IE 010 K+ IE 190 Ca++ IE 200 When used in micropipettes to record cellular ion concentrations, consider using WPI’s Duo 773 electrometer (channel A). IE010 IE190 IE200 Hydrogen Ion Exchanger (0.1 mL) Potassium Ion Exchanger (1.0 mL) Calcium Neutral Ion Exchanger (0.1 mL) 66 UK: Tel: +44 (0)1462 424700 • wpiuk@wpi-europe.com World Precision Instruments www.wpiinc.com Germany: Tel: +49 (0)30-6188845 • wpide@wpi-europe.com US: Tel: 941-371-1003 • sales@wpiinc.com