封口膜 Seal-R-film^™

告别飞溅、蒸发和污染！封口膜 Seal-R-film^™ 可将烧杯、烧瓶和其他容器封住。具有令人信服的特点：

封口膜可拉伸至其最初长度的三倍。因此，即使是不规则形状，Seal-R-film^™ 也始终适用。  为实现可跟踪性，每卷都带有一个条形码标记批次。使用 BRAND 封口膜切割器，您可以高效且节省地切割宽 50 和 100 mm 的封口膜卷，并方便清洁地保存。

- Thickness: 0.14 +/- 0.02mm

- Toxicity: non-toxic

- Melting point: > 66°C (151°F)

- Boiling point: > 288°C (550°F)

- Continuous service temperature: -20°C to 46°C

- Elasticity (25°C): 300%

- Tear strength (25°C): 1.5 MPa

Gas permeability in 24h at room temperature and a pressure of 0.1 MPa:

CO2 (carbon dioxide) < 1000 cm³/m²

O2 (oxygen) < 350 cm³/m²

Water vapor permeability < 0.8 g/m²

Chemical resistance:  

Hydrochloric acid (HCL) 36.5% - resistant

Sulfuric acid (H2SO4) 98% - resistant

Nitric acid (HNO3) 95% - resistant*

Hydrogen peroxide (H202) 30% - resistant

Sodium hydroxide (NaOH) 22% - resistant

Ammonia (NH3) 28% - resistant

Sodium chloride (NaCl) 20% - resistant

Potassium permanganate (KMnO4) 5% - resistant*

Iodine solution 0.1 mol/l - resistant*

Methanol - resistant

Ethanol - resistant

Isopropanol - resistant

* Brown coloration