As an Amazon Associate, we earn from qualifying purchases. United Scientific Diffraction Grating, 300 Lines Per Mm – AmScope United Scientific . VUSC-DFG300 Gallery Attributes Brand name, Manufacturer name, ManufacturerUnited Scientific Extra Product NameUnited Scientific Diffraction Grating, 300 Lines Per Mm – AmScope moq, multiple, tierMinQty11 MPN, SKUVUSC-DFG300 qtyInStock-2 qtySourceFieldMap snippetDiffraction grating, 300 lines per mm, designed for use with United Scientific's Intermediate Spectrometer (SPECT02). tierPrice141.60 Distributor offers SellerSKUMOQIn stockMultiplePrices amscope.comVUSC-DFG3001-211 @ $41.60