pH meters are digital instruments used to measure the pH value in a product or an aqueous solution. The pH is the negative logarithm of H+ ion concentration in a solution; mathematically speaking: pH =- log[H+]
Values: 0 to 7 for acidity and 7 to 14 for basicity
Target Applications: food industry, pharmaceutical, cosmetics, galvanic, etc.
The pH measurement consists of the following:
- an indicator with a digital display
- pH electrode( pH sensor)
- connection cable
pH measurement is affected by temperature variation. To correct this type of alteration, pH meters are constructed with temperature probes to balance the electrode’s answer.
pH Meter Type: portables or bench-top equipment
- Power supply and dimensions
- Portables are smaller and with battery power supply
- Bench-meters are useful for lab work and usually come with an arm stand.