20 x 10cm Notched Glass Plates 2mm thick
https://www.minos-euro.net/shop/166-vs10wng-20-x-10cm-notched-glass-plates-2mm-thick-9866
https://www.minos-euro.net/web/image/product.template/9866/image_1920?unique=1e82431
This x 20 is guaranteed a 10cm with the use of Glass and directly supplied to your lab by Gentaur's warehouse.
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