To control gas flow rate

Tube holder, 5 x 5-7ml, 2/pk (1 pack included)

AS18-5 Aluminum alloy rotor kit with lid (blank LOGO), fixing clips and O'ring, 15000rpm, 5ml*18, used with D3024 & D1524R(eppendorf round tube)

Magnetic intelligent heating stirrer, +5-340°C,200-1201