Additional rolls of this crystal clear tape can be purchased separately in addition to the tape that is supplied free of charge with your Growth Chambers orders. Each roll is 4 wide x 55 yards long to allow sealing of the entire plate with one strip of tape.清晰的带加可单独买另外的磁带是免提供你的生室的命令。每卷是4宽×55码整个板用一条带密封。