Disposable plastic syringe for use in colorimetry

摘要: A disposable plastic syringe particularly for use in colorimetry is formed by embossing a sheet of transparent synthetic plastic, or otherwise forming it, bulbar cavity, and subsequently closing the cavity adhering plane over two sheets being either heated sealed adhesively joined together at margins around cavity. The connected to outside edge device an embossed groove which when attached forms tubular inlet outlet. shaped as truncated pyramid with turret top, this finger-pressable ''''button'''' will draw expel liquid through connection margin device. volume drawn into each specimen relatively accurately measured. partial coating, such stripe spot, inside using color-changeindicator composition provides means making colorimetric determination acidity content some individual constituent