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Chemical reference materials
Reference materials (RM) are used to check the quality of analyses. Results can be plotted on a control card, so analysts can see whether quality is adequately assured.
Process
Once the report has been published for a successful chemical proficiency study (food and non-food), all remaining materials are then made available as reference materials. Then these materials can be ordered. As soon as the order is verified along with your information, the materials will be shipped. Some materials may be shipped on dry ice, if necessary. The reference materials are accompanied by a certificate, which provides the property values and all the relevant information. Most of the reference materials have a one-year shelf life from the date of availability.
Available reference materials
In 2012 the following chemical reference materials (food products) are available:
|
Reference material |
Amount |
Shipment |
Available |
|
[490] Fatty acids composition (SFA/TFA/PUFA/MUFA) and total fat in biscuits |
25 gr |
Ambient |
12/’11 |
|
[495] Benzoic acid, sorbic acid and colouring agent in lemonade |
25 mL |
Ambient |
01/’12 |
|
[499] Histamine in mackerel |
25 gr |
Dry ice |
26/03/’12 |
|
[501] Benzoic acid and sorbic acid in salad |
25 gr |
Dry ice |
16/04/‘12 |
|
[503] Aflatoxin B1, B2, G1 and G2 in nut product |
25 gr |
Dry ice |
30/04/‘12 |
|
[507] Fructose, glucose, lactose and saccharose in lemonade |
20 mL |
Ambient |
04/06/‘12 |
|
[508] Alcohol, sorbic acid and sulphite in red wine |
100 mL |
Ambient |
11/06/‘12 |
|
[510] Acesulfame-K, aspartame and caffeine in energy drink |
25 mL |
Ambient |
02/07/‘12 |
|
[513] Polar compounds and polymerised triglycerides in frying oil |
1 mL |
Ambient |
30/07/‘12 |
|
[517] Fatty acids composition (SFA/TFA/PUFA/MUFA) and total fat in biscuits |
25 gr |
Ambient |
10/09/‘12 |
|
[520] Glutamic acid in soup |
20 gr |
Dry ice |
12/11/‘12 |
|
[528] Benzoic acid, sorbic acid and colouring agent (identification and content) in lemonade |
25 mL |
Ambient |
04/02/’13 |
In 2012 the following chemical and physical/mechanical reference materials (non-food products) are available:
|
Reference material |
Amount |
Shipment |
Available |
|
[485] Release of N-Nitrosamines and N-Nitrosatable substances from balloons |
5 gr |
Dry ice |
09/’11 |
|
[491] NDELA in shampoo |
5 gr |
Ambient |
12/’11 |
|
[494] Content and release of lead from paint |
300 mg |
Ambient |
01/’12 |
|
[498] Parabens and phenoxyethanol in cosmetic product |
2 gr |
Ambient |
02/’12 |
|
[500] Phthalates (DEHP, DBP, BBP, DINP, DIDP and DnOP) in PVC |
1 gr |
Ambient |
02/04/‘12 |
|
[504] Allergens (e.g. d-limonene, linalool or eugenol) in perfume |
5 mL |
Ambient |
14/05/‘12 |
|
[505] Hydroquinone in cosmetic |
5 gr |
Ambient |
21/05/‘12 |
|
[509] MI, CMI and formaldehyde in finger paint |
5 gr |
Ambient |
25/06/‘12 |
|
[511] Azo dyes in textile |
5 gr |
Ambient |
23/07/‘12 |
|
[514] Release of N-Nitrosamines and N-Nitrosatable substances from balloons |
5 gr |
Dry ice |
13/08/‘12 |
|
[515] MI, CMI and formaldehyde in cosmetic |
5 gr |
Ambient |
20/08/‘12 |
|
[518] Nitrosamines in shampoo |
5 gr |
Ambient |
24/09/‘12 |
|
[518] Nitrosamines in finger paint |
5 gr |
Ambient |
24/09/‘12 |
|
[519] Magnetic flux index of magnetic toys |
1 pcs |
Ambient |
12/11/‘12 |
|
[522] Sun protection factor in sun cream |
5 gr |
Ambient |
03/12/‘12 |
|
[523] Release of elements (EN 71-3) from toys (e.g. chalk or finger paint) |
300 mg |
Ambient |
10/12/‘12 |
|
[525] Release of formaldehyde from melamine |
1 pcs |
Ambient |
07/01/’13 |
|
[526] Diisobutyl phthalate (DIBP) in PVC |
1 gr |
Ambient |
14/01/’13 |
|
[529] Release of primary aromatic amine from cooking utensils |
1 pcs |
Ambient |
18/02/’13 |
|
[530] Parabens and phenoxyethanol in body milk |
20 gr |
Ambient |
25/02/’13 |
Costs
Each chemical reference material is priced at €30 for participants and €60 for non-participants, not including shipping costs. See shipment for the shipping costs. Invoices are enclosed in the packages. Payment must be made by cheque or bank transfer and does not take place by means of the internet.
Order
If you wish to order reference materials, please fill in the order form. A confirmation will be sent when materials are ordered. At the day of shipping an e-mail is sent and within a week the materials should arrive at the given address.
By sending the order form clients agree with the terms and conditions.
For additional information please contact Mrs Mariëlle van Vondel by e-mail (chek@vwa.nl) or phone (+31 (0)88 223 33 33).
