Heathrow Scientific Test Tube Rack, 2-2/5 x 4-1/8 x 9-2/3 Inch, 1 Each Urinals unlike Guaiac-based tests which also

unlike Guaiac-based tests which also detect dietary peroxidases from meat and uncooked fruits and vegetables

Mesh window allows user to view regulator of oxygen cylinder without having to remove cylinder from carrier

hypoallergenic and pH balanced

Will not cause those unsightly brown povidone iodine stain

Heathrow Scientific Test Tube Rack, 2-2/5 x 4-1/8 x 9-2/3 Inch, 1 Each Urinals unlike Guaiac-based tests which alsoWell diameter is 16 millimeters Polypropylene racks ship flat in one piece Easy to assemble, just fold and snap together Can be used in water baths Open design allows samples to be incubated at the same temperature Rack design is optimal for tube stability Color code for easy identification Blue Autoclavable