Best Seller | Copernicus Sanitization UV Techtub Dosimeter Card Portable Accessory Plastic in Blue | 1 H x 1 W x 1 D in | Wayfair 26100 UV Tech Tub Disometer Card (12 pack). Monthly checks are recommended to check the germicidal level of UVC in the UV Tech Tub. | Copernicus Sanitization UV Techtub Dosimeter Card Portable Accessory Plastic in Blue | 1 H x 1 W x 1 D in | Wayfair more | | $89.00 $72.00 FREE shipping go to store |