High Accuracy and Resolution Portable Digital pH Meter (pH-40A)

Specifications
high accuracy and resolution portable pH meter PH-40A
Technical dataModel No.Test itemMeasuring rangeResolutioAccuracyOther Technical DataFeaturePH-40ApH0.00-14.00pH0.010.01Working voltage:
9V 6F 22 battery
Working condition:
0-50ºC
RH<85%
2 points calibrationReplaceable pHelectrode
High accuracy
Packaging&Shipping
The normal package is carton box,it also can be packaged according to customers special request.
Our Services
We have experienced and dedicated core members to offer you professional and reliable before-sales and after-sales service.
Company Information
Hangzhou Lohand Biological Co.,Ltd is a professional company that manufactures and exports laboratory instruments and equipments.We have our own registered brand"LOHAND" and own factory,with strong R&D center,sales team,customer service team and QC team,which grows very fast and obtains good reputation in the markt.
Our major products include: Refractometer,Test paper,pH meter,Electrode,TDS meter,Salinity meter, DO meter,ORP meter,Conductivity meter,Turbidity meter,Color comparison tube,test kit etc.Most of the products have CE certificate.All products can be customized according to buyers' special requirements.
FAQ
What is pH?
A pH (potential of Hydrogen) measurement reveals if a solution is acidic or alkaline (also base or basic). If the solution has an equal amount of acidic and alkaline molecules, the pH is considered neutral. Very soft water is commonly acidic, while very hard water is commonly alkaline, though unusual circumstances can result in exceptions. The pH scale is logarithmic and runs from 0.0 to 14.0 with 7.0 being neutral. Readings less than 7.0 indicate acidic solutions, while higher readings indicate alkaline or base solutions. Some extreme substances can score lower than 0 or greater than 14, but most fall within the scale.
Does my pH electrode have to be wet?
All glass electrodes have a bulb which must be kept hydrated and a reference junction which must be kept wet to prevent excess leakage of the internal electrolyte solution from the reference junction.
What should I store my pH electrode in?
Ideally, storage solution has the same chemical make-up of what is in the electrode itself, but if that is not available use buffer 4 or 7 solution. NEVER STORE IN PURE (DISTILLED) WATER!!! In the case of electrodes that are continuously immersed, storage is not an issue since they are constantly wet.