Fisher Agglutination Viewers are equipped with a mirror and light source for antigen typing donor’s and recipients. The adjustable mirror allows the technologist to view the front and back of the specimen simultaneously. Technologist use agglutination viewers to find mixed fields, rouleaux and ABO discrepancies from cold agglutens. The blood banker simply holds the centrifuged test tube under the light source and over mirror to view both sides of the test tube simultaneously. They are our best sellers and most widely used in labs for performing blood type test.