Trodat Printy Economy Self-Inking Do It Yourself, Customizable Message or Address Stamp, Impression Size: 3/4 x 1-7/8 Inches, Black (5915) auspowers_batchsix It will work for testing

It will work for testing anything in the range of 10 to 200 PPM

You'll see and feel the quality

Fine WorkmanshipThe contact point is hardened tool steel and is fine ground within the final measuring radius

tamper proof

2pcs (Type A)

Trodat Printy Economy Self-Inking Do It Yourself, Customizable Message or Address Stamp, Impression Size: 3/4 x 1-7/8 Inches, Black (5915) auspowers_batchsix It will work for testingTrodat Printy Economy Self Inking Do It Yourself, Customizable Message or Address Stamp, Impression Size: 3 4 x 1 7 8 Inches, Black (5915) U. S. Stamp & Sign Do It Yourself Self inking Stamp Date Stamp 0. 75" x 1. 88" Black Product Features Do It Yourself Stamp Kit includes a built in stamp pad, more than 300 characters and tweezers Stamp prints up to 4 Lines of text Delivers approximately 10000 impressions