NEW – Hanna Bench Meters

Precision just became more accessible!

NEW – Hanna HI-2600 bench meters

Innovation simplified

The new series of HI-2600 bench meters are innovation simplified offering an entry level instrument packed full of features & technology at a very competitive price without compromising on quality.

Each meter is supplied as standard with an appropriate digital smart probe with an integrated temperature sensor, USB-C cable, Power Adapter, Electrode Holder, Quality Certificates and a starter calibration pack.

Features and Benefits

• Seven models in the range: one multi-parameter and six single-parameter versions.
• Single-parameter models for pH, EC, and Dissolved Oxygen.
• Multi-parameter model measures pH, ORP, EC, and DO with smart probe recognition.
• Large 5.5″ display
• Smart electrode technology means elimination of signal drift.
• Electrode comes with unique serial ID for traceability and predictive maintenance messages
• Data from last calibration stored on the electrode

• Two Operating Modes depending on model.  Can be used in Standard or Basic operating modes. Standard Mode enables all features while Basic Mode reduces features—ideal for routine measurements by displaying a simplifed screen and features.
• Capacitive Touch Keypad. Sensitive capacitive touch buttons for accurate keystrokes for navigating menus and screens. Since they are part of the screen, the buttons can never get clogged with sample residue.
• Small Footprint
• Data logging depending on model
• USB-C Port for Data Transfer depending on model

Many more features.  Download the flyer below and select your model!

Hanna Instruments is a world leader in pH and titration science helping professionals with their everyday testing needs.

Download the flyer

For full Brochure with specs download here

WTW SenTix 41 pH probe for freshwater.

pH electrodes with gel electrolyte and built-in temperature sensor are ideal for portable measurement but also for routine measurement in the lab.

PRODUCT FEATURES

• Standard electrodes with gel electrolyte and built-in temperature sensor for pH measurement in lab and field.

• Maintenance-free gel reference system over the entire product life

• Automatic temperature compensation

• Robust plastic shaft

Overview

WTW SenTix 41 pH probe for freshwater.

pH electrodes with gel electrolyte and built-in temperature sensor are ideal for portable measurement but also for routine measurement in the lab.

PRODUCT FEATURES

• Standard electrodes with gel electrolyte and built-in temperature sensor for pH measurement in lab and field.

• Maintenance-free gel reference system over the entire product life

• Automatic temperature compensation

• Robust plastic shaft

SenTix®41: 1 m fixed cable with DIN plug and 4 mm banana plug SKU: 103635

The new optimized membrane glass guarantees quick measurement even at low temperatures.

The silver ion-free reference electrolyte prevents interference by precipitated silver (self-cleaning).

SenTix® PLUS electrodes with Gel electrolyte and a plastic body are robust and shockproof. The membrane glass is optimally safe-guarded by a protective shield.

SenTix® H and HW electrodes: electrolyte flow speed can be adjusted for optimal use.

The easy to use fill-hole cover prevents electrolyte from leaking out during storage.

Waterproof DIN or BNC plugs, either as a plug head system or with fixed cables, are available.

SenTix® PLUS electrodes with liquid electrolyte – the capillary effect of the platinum wire guarantees constant outflow and prevents contamination by precipitates or dirt even during changes in temperature; with new membrane glass for an even quicker response.

Measures also the temperature. For more information and to place an order click here.

On this day

On 8th January 1868, Søren Peder Lauritz Sørensen was born in Havrebjerg, Denmark.  He died on 12th February 1939.  He was a Danish chemist famous for the introduction of the concept of pH, a scale for measuring acidity and basicity.

From 1901 to 1938 he was head of the prestigious Carlsberg Laboratory, Copenhagen. While working there he studied the effect of ion concentration on proteins, and because the concentration of hydrogen ions was particularly important, he introduced the pH-scale as a simple way of expressing it in 1909.

The article in which he introduced the scale (using the notation pH), described two new methods for measuring acidity. The first method was based on electrodes, while the second involved comparing the colours of samples and a preselected set of indicators.

pH is a measure of the acidity or basicity of an aqueous solution. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline. Pure water has a pH very close to 7.

For more information visit:-

http://en.wikipedia.org/wiki/PH

http://www.encyclopedia.com/topic/Soren_Peter_Lauritz_Sorensen.aspx

Care and Storage of pH Electrodes

The life of a pH electrode is not infinite. A number of factors affect the life span of a pH electrode. The higher the temperature that the electrode is used at, the more extreme the pH, how often the bulb dries out and needs to be rehydrated, how roughly it is used; all these factors and more shorten the life span of an electrode. An electrode that is well maintained and cared for can last up to 2 years, one that is not well maintained will not last as long, and one that is well maintained will not last significantly longer.

 

Storage of the pH electrode when not in use.

The pH electrode bulb needs to be moist at all times. When you are done with the electrode pour electrode storage solution into the cap that came with the electrode and put the cap over the bulb of the electrode. Keep the cap on until next use. If the electrode is being stored for a long time you may want to check the cap to be sure the storage solution is still in the cap and keeping the bulb moist. DO NOT STORE THE pH ELECTRODE IN DISTILLED WATER. Storing the pH electrode in distilled water will shorten the life of your pH electrode.

 

If you do not have electrode storage solution use pH 4 buffer solution. If you have neither electrode storage solution or pH 4 buffer solution you can use pH 7 buffer solution for a short time.

 

Rinsing the pH electrode between measurements.

You should rinse your pH electrode between measurements. This can be done with distilled water or rinsing with a sample of the next solution to be measured. Using both distilled water and then a sample of the next solution is also a good way to rinse the pH electrode between measurements.

 

pH electrode fill hole

Some pH electrodes have a fill hole for refreshing the electrolyte in the pH electrode; other pH electrodes do not have a fill hole. If your pH electrode has a fill hole the fill hole cap should be removed during calibration and use. This allows for the correct amount of reference electrolyte to flow into the sample. Replace the fill hole cap when done with the electrode at the end of the day

 

If bulb dries out, soak electrode bulb in pH 7

pH electrode bulbs should be keep moist at all times. When not in use the pH electrode bulb should be keep moist by pouring electrode storage solution in the cap provided. If the pH electrode bulb does dry out, soak it in pH 7 buffer for a couple of hours before calibrating or taking measurements.

 

Do not wipe the pH electrode with a cloth or any other type of material.

When you are done with the pH meter rinse off the electrode with distilled water, put storage solution in the cap, and put the cap on the end of the pH electrode as described above. If the electrode is wet do not dry it off, let the distilled water evaporate by itself.

 

Cleaning the pH electrode

The pH electrode needs to be cleaned in order to prevent build up of material on the surface of the glass bulb. How often it needs to be cleaned depends upon frequency of use and the material being tested. An electrode used on dark coloured and viscous material usually needs to be cleaned more often than an electrode used on clear thin material.  Material building up on the glass bulb of the electrode will cause the calibration of the electrode to be inaccurate and any subsequent reading to be inaccurate. Follow the instructions supplied with the electrode cleaning solution when cleaning the electrode bulb.

 

P&R Labpak supply a wide range of electrode storage solutions, buffers and other associated accessories from all major manufacturers including Hanna Instruments, Mettler Toledo, Sentek, Jenway, Schott, WTW etc...

 

Visit www.prlabs.co.uk or call us on 0870 034 2055.