Combination Ph Glass Electrode Bnc E-201-9 Probe For Ph Meter Nib 0.2ph

US $23.89

  • HONG KONG, Hong Kong
  • Jan 30th
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Description Item description: 100% Brand new and high quality.   This electrode is a glass electrode and a reference electrode in combination with molded case can not be filled composite electrode, is the pH measuring element, measurements of aqueous solutions of hydrogen ion activity ( PH), it is widely used in chemical industry, pharmaceutical industry, dye industry and scientific research institutions in the detection of pH.   Measuring range: 0-14pH, Measurement temperature: 0-60℃ Zero potential:7±0.5 pH (25℃) Percentage of theoretical slope:(PTS) ≥98.5% (25℃) Resistance:≤250MΩ (25℃) Alkaline error:0.2PH(1mol/L)Na+,pH14) (25℃) Response time :≤1minute Lead:500mm Size: 185*48*68mm    Maintenance and matters needing attention:   1. electrode measurement must be made before known pH standard buffer solution set for calibration, to achieve more accurate results, known to be reliable and pH value, its pH value is closer to the measured value.   2. remove the electrode protective sleeve should pay attention to, in the plastic protection gate of the sensitive glass bulb does not contact with hard objects, any breakage and the eraser hairs will make the electrode failure.   3. after the measurement, should not the electrode protective sleeve, sleeve should put a small amount of3.3mol / L potassium chloride solution, in order to maintain electrode bulb wet.   4. the electrode terminals, must be kept clean and dry, absolutely prevent the short circuit output ends, otherwise will lead to the measurement results of misalignment or failure.   5. the electrode should be and input impedance of high acidity meter (≥1012Ω) support, can make the electrode to maintain good characteristics.   6. electrode to avoid long-term immersed in distilled water cargo protein solution and the acidic fluoride solution, and to prevent and silicone grease contact.   7. after the electrodes after long-term use, such as a slight gradient found very loving mainland, you can put the bottom electrode immersed in 4% HF (hydrofluoric acid) in 3-5 seconds, washed with distilled water and then potassium chloride solution soaked, so that the new complex.   8. the test solution as containing sensitive bulb easily contaminated liquid junction occluding material goods, leaving the electrode passivation, the phenomenon is sensitive gradient reduced cargo inaccurate readings. So, it should be based on the nature of the pollutant, the appropriate solution to clean, making the new complex.   9. the measurement can dissolve If students polycarbonate resin, an organic solvent, please use the electrodes in a glass envelope consistent with PH electrode type (e.g. 65-1Q9 type composite electrode).   NOTE: After selection of the cleaning agent, such as polycarbonate resin can be dissolved washing liquid, such as carbon tetrachloride, trichlorethylene, tetrahydrofuran, etc., may be able to polycarbonate resin is dissolved, glass beads coated sensitive Paoshang, leaving the electrode failure, please caution!   Pollutants: Organo-metal oxide Fats and oils organic matter Resin polymer material Blood cell protein precipitate Pigment substances   Cleaner: Less than 1M mol / l acid Dilute detergent (slightly alkaline) Alcohol, acetone, diethyl ether Acidic enzyme solution (eg food is born tablets) Dilute bleach, hydrogen peroxide   Package included: 1x Combination PH Electrode BNC E-201-9 Probe 1x English Manual Feedback > We maintain hightest buyer ratings > Positive Feedback will be much appreciated from you. > Any dissatisfaction, please contact us immediately! > Please do not leave neutral or negative feedback before we help you out. Payment > We accept PayPal only. > All major credit cards are accepted through secure payment processor PayPal. > Payment must be received within 7 days of auction closing. Shipping > We Ship to Worldwide, except Hong Kong, Italy, Nigeria..... > Items will be shipped within one business day on payment received. > Items are shipped from China using Airmail, delivery time depends on destination and other factors,reach most of the countries within 10 to 35 business days. Country Shipping Way Shipping Time Tracking Number United States USPS(ePacket)   7-12 Yes Russian China Post 15-35 Yes Other Country HK /Swiss Post Air Mail 15-45 No Brazil / Africa HK /Swiss Post Air Mail 25-55  No  Returns > Defect: We will fully refund or send you a new replacement,please contact and return within 14 days. > Dissatisfaction: Please contact within 3 days, we will fully refund, after got your returned goods. > Missing parts/Q'ty: Please contact us immediately,for a new package arranged,or a partial refund issued. Contact us > If have any question, Please contact us by ebay message before leaving neutral, negative feedback or open any dispute, we will reply within 24hours, ensure that help you solve the problem, make you satisfied. > Our Working-time From 8:30 AM to 21:30 PM(GMT+08).  Engineered for professional eBay sellers!
Condition:
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...
Type Combination PH Glass Electrode
Zero potential 7±0.5 pH (25°C)
Model E-201-9
Resistance <=250M? (25°C)
Measuring range 0-14pH
Alkaline error 0.2PH(1mol/L)Na+,pH14) (25°C)

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