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pH-meter - Cobra
Product no.: 4755, Weight: 350 g., In stock
Price for
1 item: 460,00 DKK

Picture of pH-meter - CobraPicture of pH-meter - Cobra
Picture of pH-meter - Cobra

Brugsvejledning

pH-meter til måling af syrlighed af væsker.

Praktisk udformet med en 11,5 cm lang og smal Ø12 mm probe.

Leveres med en beskyttelseshætte med opbevaringsvæske.

Anvender 2 stk CR2032 batterier - medfølger.

Til kalibrering af pH-meteret anvendes bufferopløsninger med pH 4.01 og 7.01 - skal tilkøbes separat.
Til opbevaring af elektroden anvendes en opbevaringsvæske - skal tilkøbes separat.

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Cart - This product     Qty. Per Unit Price
pH-meter - Cobra 460,00 DKK
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Calibrating solution - pH 4.01 and pH 7.01

Calibrating solution - pH 4.01 and pH 7.01

Price for
1 item: 110,00 DKK

Calibrating solution - pH 4.01 and pH 7.01		 110,00 DKK

Storage solution for pH sensor, 50 ml

Storage solution for pH sensor, 50 ml

Price for
1 item: 85,00 DKK

Storage solution for pH sensor, 50 ml		 85,00 DKK

Praktisk og vandtæt pH-meter med tydeligt display.

• Praktisk beholder til beskyttelse af elektroden

• 2 punkts AUTO-kalibrering med trykknap

• ATC (Automatisk temperaturkorrektion) fra 0°C til 50°C, med angivelse af temperatur.

• pH-visning: pr 0,01 pH. Nøjagtighed: +/- 0,1 pH.

• Temperatur-visning: pr 0,1°C. Nøjagtighed: +/- 1°C.

• HOLD-funktion.

• Slukker automatisk efter 20 min.

• Anvender 2 x CR2032 batteri (medfølger).

• Dimensioner:
   - Probe Ø 12 mm, Længde 11,5 cm
   - Hus, Bredde 36 mm, Højde 20 mm, Længde 110 mm
   - Display 22 x 28 mm

• Opbevarings- og kalibreringsvæsker købes separat


Usage

Proper maintenance of your pH-meter.

Correctly maintaing your pH-meter ensures a long life span.

Here are some precautions:

  • When buying your pH-meter the electrode will be dehydrated.
    Prior to using it for the first time, leave the electrode to soak in storage solution 4 hours.

  • Use the cover (with a damp sponge soaked in storage liquid) on the electrode after each time. This will prolong its lifespand.

  • Calibrate the pH-meteret prior to using it for the first time.
    Normally with calibration solutions pH 4 og pH 7.

  • Make sure not to contaminate the calibration solution. 
    Never insert the electrode directly into the solution, take out a small portion and soak it from there.
    Throw away used calibration solution - do NOT pour it back into the container!

  • Do not touch the electrode, eps. not with your fingers. If you whish to clean it - use a soft cloth without rubbing the electrode.

Background

pH is a measure of the concentration of free hydrogen ions (H+) in a liquid.

The pH scale runs from 0 to 14.
pH of pure water is 7.

Liquids having a higher concentration of H+ compared to pure water is an acid and has a pH below 7.
Liquids having a lower concentration of H+ compared to pure water is a base and has a pH higher than 7.

The pH may be of importance to what can or will happen to a liquid.
The pH of a liquid can be changed by adding various chemical substances which then adds or binds H+.

The pH may also change with bacterial activity in a liquid with a content of sugar, like milk or water/tea with added sugar. Here, the bacteria convert the sugar and form lactic acid which increases the concentration of H+. Thus, the pH will drop during bacterial activity.

By measuring the pH during production of, for example, cheese, yogurt, kefir and kombucha you may optimize the result.

Facts

Shipment weight350g


Shipping (Dänemark): 49,00 DKK - Select country:
You may add additional 50 g for the same shipment price. See more here.


pH-meter - Cobra
Product no.: 4755, Weight: 350 g., In stock
Price for
1 item: 460,00 DKK

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