For use with the DR/2010 and DR/2000 Spectrophotometers. Comes as a set of matched pair cells. Specifications Material: Glass Optical Path Length: 1 inch rectangular, 25 mL Quantity: 2 #Sample Cell #CUVET #Test #Analisa #HACH #Buffer #Larutan Kalibrasi #Spektrofotometer #Spechtrophotometry HACH web source : https://www.hach.com/sample-cell-1-square-glass-25ml-matched-pair/product?id=7640432885 amp;callback=qs#