本产品为BRAND Seal-R-film™ sealing film, 中文名为普兰德Seal-R-film™封口膜。本产品规格为宽10厘米(3.937英寸)，长38米(124.672英尺)，与PARAFILM® M封口膜(4英寸×125英尺)，也称PARAFILM封口膜，的尺寸、用途几乎完全相同。本产品为原装进口。
本封口膜可将培养皿、离心管、烧杯、烧瓶和其它容器封住，避免飞溅、蒸发和污染。
本封口膜可拉伸至其最初长度的三倍。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。
本封口膜的相关参数如下表：
| Parameters | Specifications |
| Thickness | 0.14 +/- 0.02mm |
| Toxicity | non-toxic |
| Melting point | > 66℃ (151ºF) |
| Boiling point | > 288℃ (550ºF) |
| Continuous service temperature | -20℃ to 46℃ |
| Elasticity (25℃ ) | 300% |
| Tear strength (25℃) | 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 |
本封口膜对部分酸碱溶液和有机溶剂的化学兼容性见下表：
| Chemicals | Resistance |
| Hydrochloric acid (HCl) 36.5% | Resistant |
| Sulfuric acid (H2SO4) 98% | Resistant |
| Nitric acid (HNO3) 95% | Resistant/Brown coloration |
| Hydrogen peroxide (H2O2) 30% | Resistant |
| Sodium hydroxide (NaOH) 22% | Resistant |
| Ammonia (NH3) 28% | Resistant |
| Sodium chloride (NaCl) 20% | Resistant |
| Potassium permanganate (KMnO4) 5% | Resistant/Brown coloration |
| Iodine solution 0.1 mol/L | Resistant/Brown coloration |
| Methanol | Resistant |
| Ethanol | Resistant |
| Isopropanol | Resistant |
室温保存。
