Chemical, Physical & Analytical Testing

Donnington Laboratories offers a range of physical testing and analytical testing services at our UK laboratory. Commonly requested physical tests include:

  • Colour, odour & appearance (subjective assessment)
  • pH
  • Conductivity
  • Viscosity
  • Specific gravity
  • Refractive index
  • Melting/slip point
  • Colour (Gardner/Hazen)
  • Loss on drying/total solids

“Wet” chemical determinations include:

  • Acid value
  • Saponification value
  • Iodine value
  • Peroxide value

Instrumental analysis

We also offer analysis by GC, headspace GC and HPLC. Typical gas chromatographic analyses include fragrance/essential oil fingerprinting for QC purposes and the quantitative determination of ethanol and propan-2-ol. HPLC analyses include, for example, sunscreen and preservative determination.

In many cases, if we are unable to meet your requirements ourselves, we can commission the necessary analyses with an accredited third party laboratory on our client’s behalf. For example, we outsource flash point and heavy metal determinations to external specialist laboratories.

FURTHER INFORMATION ON PRICES AND SUBMISSION

Physical Testing

Test Turnaround (days) Min sample requirement Price/sample*
Colour, odour & appearance (subjective assessment) 10 £10
pH/conductivity 10 25 – 30ml/g £10
Viscosity 10 100ml/g £20
Specific gravity 10 100ml/g £20
Refractive Index 10 20 – 25ml/g £20
Melting Point 10 20 – 25g £20
Colour (Gardner/Hazen) 10 20 – 25ml/g £20
Loss on drying/total solids 10 20 – 25g £25
* based upon the submission of a single sample. Discounts are available for submissions comprising multiple samples for the same tests. Contact us for a quotation.

Chemical testing

Test Turnaround (days) Min sample requirement Price/sample*
Acid value 10 50g £20
Saponification value 10 50g £20
Iodine value 10 50g £25
Peroxide value 10 50g £25
Free fatty acid value 10 50g £20
Free fatty acid profile 10 50g £80
* based upon the submission of a single sample. Contact us for a quotation.

Analytical testing

Test Turnaround (days) Min sample requirement Price/sample*
Analysis by GC Target 10 50g POA
Analysis by HPLC Target 10 50g POA
* Prices depend on the nature of the analysis required and number of samples requiring analysis.

All prices exclude VAT. Contact us for a quotation.