Welcome to Aptifirst, for sensors, controllers, software, instrumentation, testing machines, and much more!

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Load cells
Strain gauge amps
Weighing control
Radio Telemetry

Capillary Rheometry
Extrusion Dies
Die Swell
Sapphire Window Probes
Email output
Text output
Cement & concrete test
Sir Isaac Newton profile


We apply science, engineering, technology and a wide breadth of experience and skill to help us to supply a range of state-of-the-art instrumentation and sensors, materials testing machines, special purpose machines, test rigs and software. We supply selected complementary products of respected companies as well as our own products. We have had an article on the application of rheology published in Medical Plastics News, and a copy may be downloaded here.

Aptifirst Ltd accepts payment via credit and debit cards and via PayPal.
Please note that we are having some problems with our site - the on-site search engine provider ceased operations without telling us. And our site update software is misbehaving. Please bear with us - we are working on it.

Please do click on the product groups below to explore further:



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Radio Telemetry

Radio Telemetry Instrumentation Systems

Sapphire Window Optical Process Probes

SWOPP Sapphire Window Optical Process Probes for in-line NIR, UV, Visible soectrometry

Strain Gauge & Load Cell Instruments

Strain Gage and Load Cell conditioning instrumentation

Temperature & Process Controllers

Temperature & Process Controllers and Monitors

Digital Timers

Dual Output Digital Timer Module, Panel Mounting


Weighing Process Controllers

Weighing Process Controllers

GSM Temperature Monitors
AGT Series GSM TExt Message and Email Temperature Monitor

NODS Die Swell Measurement

Die Swell Laser Micrometer

Sir Isaac Newton:
A Profile

Sir Isaac Newton - a profile

On-Line & In-Line
Rheometer Systems

On-Line and On-Line Rheometry Systems

LVDT And RVDT Amplifiers

LVDT and RVDT precision analogue amplifiers with AC or DC power supply options

Special, Bespoke and Prototype Instruments and Machines

Special Purpose, bespoke and prototype instruments, devices and machines  RACER high-speed, high pressure capillary extrusion rheometer  EFR Extrudate Fibre Rheometer for spinneret extrusion  BFR2100 Remote Control Capillary Rheometer




We have much expertise in measuring the rheology and processing behaviour of multiphase materials, as well as less complex systems.

We offer capillary extrusion rheometers, melt flow indexers, a workability tester for fresh cement and concrete, flammability test for limiting oxygen index, radio telemetry, radio modems, process controllers, weighing controllers, strain gauge and load cell amplifiers, in-line and on-line viscometers, precision extrusion dies, infra-red thermometers, laser micrometers, and many other items.

Also, we design and build special purpose or bespoke instruments and prototypes, and help you to solve problems either with our in-house expertise or through our extensive network of associates.

We are adding pages to to the site regularly. For instance, an article by our Managing Director on cement and concrete workability has been published, and a copy is available here, and we have just added the AGT GSM Temperature Monitor, and ARPS GSM Controlled Power Socket. The T24 Radio Telemetry range has been extended, too.

Please do contact us if you need any advice or help.


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Aptifirst Ltd
Willow House, 17 Braemar Close, Loughborough LE12 7ES UK
Email: sales@aptifirst.com     Tel: +44-(0)116-237-4805    Fax: +44-(0)870-120-9370
here for our Terms and Conditions ofSale
E & OE              Specifications are subject to change without notice    
    © 2014 Aptifirst Ltd
Company Registration No: 07607993   Registered Office: As above   EORI No: GB996319662000
VAT Registration Number: GB 996 3196 62    Directors: B A Carter, R E Carter MSc FIMMM, CEng

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