How can I measure the pH of food?

Measuring pH in food is a useful indicator of consistency over batches for quality control but can also be used to monitor foods where the pH changes over time – for example in yogurt production, brewing or to test the freshness of foods.

Standard pH electrodes will often struggle when used in food samples, as the reference junction becomes blocked the reaction time will get slower and eventually the electrode will fail.

Using an electrode that is designed to cope with food samples will ensure longer life and more accurate results.

So what options are available to test the pH of food products?

The HI99161N meter complete with spear tip food electrode

The HI99161N meter complete with spear tip food electrode

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How can I measure temporary and permanent water hardness?

Hard water is water with high levels of dissolved minerals, and usually occurs in areas where limestone and chalk are common.

These minerals can be divided into two types, and so hardness is often considered in two categories – permanent and temporary water hardness.

Hard water causes deposits on heating elements, but can also give water a cloudy appearance and affect taste and its ability to form a soap lather

Hard water causes deposits on heating elements, but can also give water a cloudy appearance, affect its taste and reduce its ability to form a soap lather

So how can we measure water hardness? Can we measure temporary and permanent hardness separately?

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Aluminium top hotplate for working with solids directly on the plate surface

The HP61A Programmable Hotplate by Torrey Pines offers the usual high quality and programmable features expected, but is also suitable to use when working with solids directly on the plate surface.

HP61A hotplate

The HP61A programmable hotplate with aluminium top

This makes it ideal for use in tasks such as wafer processing and annealing, baking photo resists, wax and glue heating and bonding, micro fabrication and encapsulation, surface mount soldering or any need to heat samples directly on the heater surface.

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Bunsen Burner starter kits with everything needed in one package

Bunsen Burners are used in most laboratories worldwide and for many scientists this will have been one of the first things they ever used in a lab for their first experiments at school!

Lithium Flame Test

Flame tests to determine metals is one of the first experiments many people perform at school, using a basic bunsen burner

But even the humble Bunsen burner requires a few extra items to get started – Camlab can now offer this in one easy starter pack.

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Maintain accurate column temperatures for HPLC analysis – even below room temperature

The Echotherm™ CO50 unit can accurately maintain the temperature of HPLC columns with chilling as well as heating, so it can be used from 4°C up to 100°C to within 0.1°C.

Echotherm CO50 Column heater/chiller

The Echotherm CO50 Column heater / chiller for HPLC column temperature control

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Stuart Undergrad Hotplate Stirrers now availble as a kit with controller included

Starter kits are a great option to make sure that everything you need to get started is included in one box, making it easy for you to begin work quickly.

We are big fans of starter kits, from our COD starter package to our vacuum filtration starter kit so we’re glad to hear that Stuart’s Undergrad hotplate stirrer units are now available as a kit which includes the SCT1 controller and all the required accessories in one package.

UC152 kit with hotplate stirrer and controller along with accessories

The UC152 kit contents

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The new BD600 BOD measurement system

The Oxidirect BOD measurement system has been replaced by Lovibond’s new BD600 system, which has a range of additional features

BD600 system with remote control

The new BD600 BOD system from Lovibond

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Adam’s Nimbus range – balances for all applications from factories to labs…

With their compact footprint and easy operation, Adam Equipment’s Nimbus range of analytical and precision balances are designed for discerning users in all fields.

The Nimbus series offers readabilities from 0.1mg to 0.1g and capacities from 80g up to 22kg so there will be a model to suit all users from precise pharmaceutical laboratories to manufacturing sites or factories.

Nimbus Balances range

The Nimbus range of balances offer something for everyone – from 80g up to 22kg they are suited to laboratories or manufacturing

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Posted on August 12, 2015 at 12:30 pm by Sophie Bryant · Permalink · Leave a comment
In: 7. FAQ's and Knowledgebase, Weighing · Tagged with: , , , , , , ,

Vibration Free Chilling Incubators – Ideal for Protein Crystallography

The new range of EchoTherm™ vibration free bench top chilling incubators by Torrey Pines are ideal for protein crystallography and other life science laboratory uses.

Torrey Pines EchoTherm vibration free chilling / heating incubator

The EchoTherm vibration free chilling / heating incubators can be used for delicate or sub-ambient work

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Safe and Simple Specimen Transport with SpeciSafe

SpeciSafe® secondary packaging containers provide a safe, convenient and economical solution for compliant mailing of biohazardous and clinical specimens.

They provide an easy way to meet the requirements of the UN standard UN3373 for transport of biological samples.

SpeciSafe system for sample transport

Specisafe mailing containers system provides an easy way for compliant transport of biological samples

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Posted on August 7, 2015 at 12:00 pm by Sophie Bryant · Permalink · Leave a comment
In: 7. FAQ's and Knowledgebase, Safety, Sampling