New tube format

The new con­i­cal tube for­mat of 25 mL, devel­oped by the inven­tor of the “Eppi” tube, will advance the world of con­i­cal tubes. Work­ing with sam­ple vol­umes between 15 mL and 25 mL — often used in bacterial/microorganism cul­ture as well as dur­ing purifi­ca­tion of plas­mid DNA/biomolecules, in cell cul­ture or dur­ing assay prepa­ra­tion, leaves no option to researchers but to work with a tra­di­tion­al high-vol­ume tube like the 50 mL con­i­cal tube. In recog­ni­tion of this fact, Eppen­dorf has devel­oped the Eppen­dorf Con­i­cal Cube 25 mL — avail­able with either the new, patent­ed SnapTec cap or with screw cap.

These con­i­cal tubes have the same diam­e­ter as con­ven­tion­al 50 mL con­i­cal tubes but a ~20 % low­er height. This allows space-sav­ing stor­age, for exam­ple in freez­ers. Addi­tion­al­ly, the con­sump­tion of valu­able raw mate­r­i­al is reduced by 26 % for the screw cap 25 mL con­i­cal tube and by 20 % for the SnapTec cap 25 mL con­i­cal tube com­pared to a con­ven­tion­al 50 mL tube. Pro­por­tion­al­ly, lab­o­ra­to­ry waste of con­i­cal tubes will there­fore also be reduced.

The wide open­ing, com­bined with the low­er height, offers easy sam­ple access. When work­ing with low-vol­ume pipettes and tips, the risk of cross-con­t­a­m­i­na­tion between pipette and tube by touch­ing the inner tube wall is reduced to a min­i­mum. Pre­mi­um raw mate­ri­als, with­out the use of plas­ti­ciz­ers and bio­cides dur­ing man­u­fac­tur­ing, ensure high­est sam­ple integri­ty and opti­mal sam­ple and pel­let visibility.

The most inno­v­a­tive fea­ture is the patent­ed Snap Tec cap, which is unique with­in the con­i­cal tubes mar­ket. This cap is firm­ly con­nect­ed to the tube. No need to put the cap on the bench, run­ning the risk that caps from dif­fer­ent tubes may become mixed up or con­t­a­m­i­nat­ed.  The Snap Tec cap allows sin­gle-hand­ed open­ing and clos­ing for quick liq­uid extrac­tion or addi­tion of sam­ple. This is par­tic­u­lar­ly advan­ta­geous in mul­ti­step lab protocols.

Of course, the Con­i­cal Tubes 25 mL are direct­ly deploy­able. Straight­for­ward inte­gra­tion into the exist­ing lab­o­ra­to­ry envi­ron­ment is ensured. Con­cur­rent­ly, Eppen­dorf pro­vides a full sys­tem of com­po­nents. Adapters for both tube vari­ants to be used in cen­trifu­ga­tion rotors for 50 mL con­i­cal tubes are avail­able, as well as adapters for Eppen­dorf Ther­mo Mix­er C and Ther­mo­stat C, Tube Hold­er for Eppen­dorf Mix Mate, Stor­age Box, Tube Rack and Sin­gle Tube Stand.