Tris 缓冲盐溶液简称 TBS, 属于常规 pH 缓冲液，常用于清洗 Western Blot 中蛋白印迹膜,或者配制封闭液，是常用分子生物学试剂。在 TBS 的基础上加入2%的 Tween-20，能够大大增强 TBS 的洗涤作用。
TBST缓冲液 (20×，pH7.5)主要成分为 Tris-HCl(pH7.5)、氯化钠 Tween-20、防腐剂等，主要用于 Western Blot 中 PVDF、NC 膜的洗涤，亦可作为封闭液的基础试剂。
| 货号 | 名称 | 洗涤力度 | 适用场景 | 说明 |
| T1529792 | TBST缓冲液 (20×, pH7.4) | 弱 | 磷酸化蛋白 WB、低丰度蛋白 WB；细胞免疫荧光 ICC/IF；抗原位点对 pH 敏感的靶标；抗体亲和力较低的体系 | 接近生理 pH，最大程度保护抗原 - 抗体结合，减少信号丢失 |
| T1529793 | TBST缓冲液 (20×, pH7.5) | 中等 | 常规蛋白 WB（细胞 / 组织样本，牛奶封闭）；IHC 切片洗涤；普通 ELISA 洗板；绝大多数一抗体系 | 平衡去背景与特异性信号，无特殊实验要求优先选此款 |
| T1529794 | TBST缓冲液 (20×, pH8.0) | 强 | 高背景 WB、杂蛋白非特异吸附严重；NC 膜洗涤；重组蛋白 ELISA；BSA 封闭体系 | 碱性环境降低膜的非特异性吸附，但过高 pH 容易解离抗原抗体复合物，造成条带变弱 |
操作步骤(仅供参考)：
1、根据实验具体要求操作。
2、一般稀释至 1×，进行下游实验。
3、清洗膜时，每次 5～10 min，重复 3 次。
注意事项：
1. 如果每次的使用量很小，可以适当分装后再使用。
2. 为了您的安全和健康，请穿实验服并戴一次性手套操作。
3. 本产品仅供科研使用，严禁它用。
Tris-buffered saline solution, abbreviated as TBS, is a conventional pH buffer commonly used for washing protein blotting membranes in Western Blot, or for preparing blocking solutions. It is a commonly used molecular biology reagent. Adding 2% Tween-20 to TBS can greatly enhance the washing effect of TBS.
TBST buffer (20×, pH 7.5) mainly contains Tris-HCl (pH 7.5), sodium chloride, Tween-20, preservatives, etc. It is mainly used for washing PVDF and NC membranes in Western Blot, and can also serve as a basic reagent for blocking solutions.
| Cat. No. | Product | Wash Strength | Applications | Notes |
| T1529792 | TBST Buffer (20×, pH7.4) | Weak | Phosphoprotein WB, low-abundance protein WB; cell immunofluorescence (ICC/IF); targets with pH-sensitive epitopes; systems with low antibody affinity | Close to physiological pH, maximally preserves antigen–antibody binding and reduces signal loss |
| T1529793 | TBST Buffer (20×, pH7.5) | Moderate | Routine protein WB (cell/tissue samples, milk blocking); IHC section washing; standard ELISA plate washing; most primary antibody systems | Balances background removal and specific signal; first choice for general use without special requirements |
| T1529794 | TBST Buffer (20×, pH8.0) | Strong | High-background WB, severe non-specific protein adsorption; NC membrane washing; recombinant protein ELISA; BSA blocking systems | Alkaline environment reduces non-specific membrane adsorption, but excessively high pH may dissociate antigen–antibody complexes and weaken bands |
Procedure (for reference only):
1.Operate according to the specific experimental requirements.
2.Generally dilute to 1× for downstream experiments.
3.When washing membranes, wash for 5–10 min each time, repeat 3 times.
Precautions:
1.If the amount used each time is very small, it can be appropriately aliquoted before use.
2.For your safety and health, please wear a lab coat and disposable gloves during operation.
3.This product is for research use only. Strictly prohibited for any other use.
危险品化学品经营许可证（带存储）