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.


Physical Testing


[tr][td]Test[/td] [td]Turnaround (days)[/td] [td]Min sample requirement[/td] [td]Price/sample*[/td][/tr]

[tr][td]Colour, odour & appearance (subjective assessment)[/td] [td]10[/td] [td][/td] [td]£10[/td][/tr]

[tr][td]pH/conductivity[/td] [td]10[/td] [td]25 – 30ml/g[/td] [td]£10[/td][/tr]

[tr][td]Viscosity[/td] [td]10[/td] [td]100ml/g[/td] [td]£20[/td][/tr]

[tr][td]Specific gravity[/td] [td]10[/td] [td]100ml/g[/td] [td]£20[/td][/tr]

[tr][td]Refractive Index[/td] [td]10[/td] [td]20 – 25ml/g[/td] [td]£20[/td][/tr]

[tr][td]Melting Point[/td] [td]10[/td] [td]20 – 25g[/td] [td]£20[/td][/tr]

[tr][td]Colour (Gardner/Hazen)[/td] [td]10[/td] [td]20 – 25ml/g[/td] [td]£20[/td][/tr]

[tr][td]Loss on drying/total solids[/td] [td]10[/td] [td]20 – 25g[/td] [td]£25[/td][/tr]


* 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


[tr][td]Test[/td] [td]Turnaround (days)[/td] [td]Min sample requirement[/td] [td]Price/sample*[/td][/tr]

[tr][td]Acid value[/td] [td]10[/td] [td]50g[/td] [td]£20[/td][/tr]

[tr][td]Saponification value[/td] [td]10[/td] [td]50g[/td] [td]£20[/td][/tr]

[tr][td]Iodine value[/td] [td]10[/td] [td]50g[/td] [td]£25[/td][/tr]

[tr][td]Peroxide value[/td] [td]10[/td] [td]50g[/td] [td]£25[/td][/tr]

[tr][td]Free fatty acid value[/td] [td]10[/td] [td]50g[/td] [td]£20[/td][/tr]

[tr][td]Free fatty acid profile[/td] [td]10[/td] [td]50g[/td] [td]£80[/td][/tr]


* based upon the submission of a single sample. Contact us for a quotation.

Analytical testing


[tr][td]Test[/td] [td]Turnaround (days)[/td] [td]Min sample requirement[/td] [td]Price/sample*[/td][/tr]

[tr][td]Analysis by GC[/td] [td]Target 10[/td] [td]50g[/td] [td]POA[/td][/tr]

[tr][td]Analysis by HPLC[/td] [td]Target 10[/td] [td]50g[/td] [td]POA[/td][/tr]


* Prices depend on the nature of the analysis required and number of samples requiring analysis.

All prices exclude VAT. Contact us for a quotation.