The cap lock ensures an optimum tightness and prevents uncontrolled opening.

Tubes micro-tubes
Reaction tubes safety-cap
Micro-tubes safety-cap
Tubes micro-tubes
Reaction tubes safety-cap
Micro-tubes safety-cap
Tubes micro-tubes
Reaction tubes safety-cap
Micro-tubes safety-cap
Tubes micro-tubes
Reaction tubes safety-cap
Micro-tubes safety-cap
Tubes micro-tubes
Reaction tubes safety-cap
Micro-tubes safety-cap
Tubes micro-tubes
Reaction tubes safety-cap
Micro-tubes safety-cap
Tubes micro-tubes
Reaction tubes safety-cap
Micro-tubes safety-cap
Tubes micro-tubes
Reaction tubes safety-cap
Micro-tubes safety-cap