Screw Cap Conical Tubes and Caps Volume: 2.0 ml Conical Tube and Cap · Rated at: 20,000 x G · Frosted writing area on tube and cap · In a sterile pack, tubes are divided into 10 individual bags with 50 tubes each · Caps are screwed onto tubes in a sterile pack · Tube also available in Amber 521-A · Amber caps sold separately Ordering Guide SKU | Color | Sterility | Packaging | Tips/Unit | Unit/CS | 521-Q | Natural | Non Sterile | Bagged Tube Only, No Cap | 500 | 10 | 522-Q | Natural | Non Sterile | Bagged, Tube and Unattached Cap with O-Ring | 500 | 10 | 522-S-Q | Natural | Sterile | Bagged, Tube and Attached Cap with O-Ring | 500 | 5 | TC-522-Q | Natural | Non Sterile | Bagged, Tube and Attached Tethered Cap with O-Ring | 500 | 10 | TC-522-S-Q | Natural | Sterile | Bagged, Tube and Attached Tethered Cap with O-Ring | 500 | 5 | Screw Cap Free Standing Conical Tubes and Caps Volume: 2.0 ml Free Standing Conical Tubes and Cap · Rated at: 18,000 x G · Frosted writing area on tube and cap · Graduated at 0.5 and 1.0 ml · In a sterile pack, tubes are divided into 10 individual bags with 50 tubes each · Caps are screwed onto tubes in a sterile pack · *Tube also available in Amber 519-GRD-A · Amber caps sold separately SKU | Color | Sterility | Packaging | Tips/Unit | Unit/CS | 519-GRD-Q | Natural | Non Sterile | Bagged Tube Only, No Cap | 500 | 10 | 520-GRD-Q | Natural | Non Sterile | Bagged, Tube and Unattached Cap with O-Ring | 500 | 10 | 520-GRDS-Q | Natural | Sterile | Bagged, Tube and Unattached Cap with O-Ring | 500 | 5 | TC-520-GRD-Q | Natural | Non Sterile | Bagged, Tube and Attached Tethered Cap with O-Ring | 500 | 10 | TC-520-GRDS-Q | Natural | Sterile | Bagged, Tube and Unattached Cap with O-Ring | 500 | 5 | |