Electronic Cigarette Industry Trade Association

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ECITA ISE Annex V Procedure for repackaging e-liquid samples for blind testing

24 : Annex V Procedure for repackaging e-liquid samples for blind testing

Monday, November 10, 2014

Procedure for repackaging e-liquid samples for blind testing

•    Sample vials will be class A, composed of borosilicate glass with PTFE lined caps, to ensure samples are not contaminated.
•    Transfers will be done using a base tray, in a clean well-ventilated room.
•    Gloves and masks will be worn during the transfer process, and gloves will be changed if visibly contaminated.
•    Two sample vials will be filled. One will be sent for testing, and the other retained as a reference, and in case of any dispute.
•    Wherever possible, equipment used during the transfer will be single use and disposable to minimise the potential for cross-contamination.

Samples supplied as free liquid

Sample transfer of liquids will be accomplished by direct pour from supplier’s bottle to sample vial.

Samples supplied as cartridges

The filler from the cartridges will be removed using sterilised titanium tweezers (cleaned and sterilised by rinsing with analytical-grade Isopropol Acohol and allowed to air dry, ensuring that the IPA completely evaporates), and placed in a syringe. The liquid will then be extracted directly to a sample vial, by compressing the filler. The syringe will be disposed of via appropriate channels after transfer. The tweezers will be cleaned and sterilised before and after each sample transfer.

Samples supplied as cartomisers

The wadding from the cartomisers will be removed using sterilised titanium tweezers (as above). The wadding will be placed in a clean syringe, and compressed to extract the liquid into a sample vial. The syringe will be disposed of via appropriate channels after transfer.

Sample identification and documentation

Samples will be labelled as ‘ECITA’ followed by the date of transfer for members’ samples, and ‘VKC’ for non-member samples, and a sequential number, e.g. the first sample transferred on the first of December 2014 would be ‘ECITA-011214-01’ and the second ‘ECITA-011214-02’. This number will be recorded on both sample vials, one of which will be retained and attached to the paperwork identifying the sample’s origin. This will identify the member, batch number, flavour, nicotine strength and base liquid. It will also include a picture of the product and all the details from the label, as well as the dates the sample was submitted, transferred, and tested. The retail labels of these samples will also be tested centrally for indelibility, as prescribed by CLP et al regulations.

The original documentation will be held centrally by ECITA/VKC and a copy sent to the member/non-member. There will also be a central database detailing all the information pertaining to the membership’s e-liquid testing, so that this can be available for auditing by regulators such as Trading Standards.

Please see below for sample sheet illustrating central storage of blind testing data.