Lieu où se trouve:Leeds,
Lieu de livraison: Worldwide,
Numéro de l'objet:261832100115Universal indicator papers have been impregnated with a mixture of several indicators. On contact with the sample solution they assume a particular colour. A check against the supplied colour comparison table allows the pH to be determined.200 test paper strips packed in a tidy plastic case. To see how does it work and how does the colour change, dip a small section of the pH paper in a sample of tap water, then add a drop or two of vinegar; the colour will change from green to red (acidic), or add a drop of bleach; the colour will change to dark blue (basic). Reduce risk by using as a pre-test validation toolSimplified testing with results in less than one minuteTest strips eliminate chemical handling and clean-upVial label contains the colour key for easy readings in lab or fieldTest full range pH (1 - 14)200 test strips included (10 books x 20 strips)Graduation: 1 pH unitCase dimensions: ~73x53x15 mmWeight: ~35 gCost effectiveInstructions:Hold pH paper strip from edge and dip its other end in test sample for a second; you may also drop a few drops of sample on the pH paper using an eyedropper. Compare the colour obtained of the wet paper strip with the colours shown in the chart provided to find out the pH value.Store unused pH papers in dark and dry place. For more of our products of lab equipment and glassware: Please click here to visit our eBay shop: MESE-Ltd Available models of hotplate stirrers (please see our other listings): SH-2, SH-3, SH-4, SH-4C (Hotplate Magnetic Stirrer with digital display and temperature control, and external Pt100 temperature sensor), and SH-5C (same as SH-4C, but with digital control on stirring speed and timer). Technical Parameters: ModelSH-2SH-3SH-4SH-4CSH-5CSpecificationsAnalogueAnalogueAnalogueDigital Temperature PID ControlDigital Temperature, Speed, and Timer, PID ControlElectricity requirement220-240 V, 50 HzPower, W180500600600600Top plate size, mm120x120170x170190x190Top plate materialAnodised AluminiumAnodised AluminiumCeramic coatingMax. temperature380 ºC (716 ºF)Stirring speed, RPM0-1600200-2000Maximum stirring volume, ml10003000500050005000Operating and storage conditionsIn-doors, room temperature, less than 90% Relative humidity, good ventilation, and no corrosive gases We also have range of different models and sizes (50ml up to 10 litres) of heating mantles with magnetic stirrers: We are a UK based company specialists in supplying of scientific and laboratory equipment. Please take a look at the feedback of our customers to evaluate our services. All our equipment is CE marked. Our products are guaranteed and hold our name. Please click here to visit our eBay Shop: MESE-Ltd.This is our ONLY official eBay shop. Please be aware of private sellers who copied our listing and offer low quality products!!! For more items of glassware and lab equipment, please click here to visit our eBay shop: MESE-LtdCondition:New, Unit Quantity:1, MPN:Does Not Apply, Unit Type:Unit, Brand:Unbranded/Generic
PicClick Insights pour "
Universal pH Indicator Paper Test Strips; 1 to 14 pH ; 200 Strips in a tidy case