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Start of the PTB Ex Proficiency Testing Program

We are pleased to inform you about the beginning of the PTB Ex Proficiency Testing Program (pilot phase). We have started shipping the first Test Sample "d". The other test samples will follow shortly.

We hope the program will be very successful and that it will be an enriching experience for all participants.

To make the program a success we appreciate your comments and feedback about any aspects of the program.

We wish you all a good start.

Best regards,

PTB Ex-Proficiency Testing Team