Phosphate Buffered Saline<\/a> (PBS)<\/strong> is a commonly used buffer solution<\/strong> in biological research and laboratory settings. It is designed to maintain a stable pH and osmolarity, making it ideal for many cell culture, molecular biology, and biochemical applications<\/strong>.<\/a><\/p>\n PBS is typically composed of:<\/p>\n Sodium chloride (NaCl)<\/p>\n<\/li>\n Sodium phosphate (Na\u2082HPO\u2084 and NaH\u2082PO\u2084)<\/p>\n<\/li>\n Potassium chloride (KCl)<\/p>\n<\/li>\n Potassium phosphate (KH\u2082PO\u2084)<\/p>\n<\/li>\n<\/ul>\n PBS is widely used because it:<\/p>\n Maintains physiological pH (around 7.4)<\/strong><\/p>\n<\/li>\n Is isotonic<\/strong>, minimizing cellular stress<\/p>\n<\/li>\n Supports cell viability<\/strong> during washes and handling<\/p>\n<\/li>\n Acts as a stable buffer<\/strong> for multiple lab procedures<\/p>\n<\/li>\n<\/ul>\n PBS is often used for:<\/p>\n Washing cells in culture<\/p>\n<\/li>\n Diluting antibodies or reagents<\/p>\n<\/li>\n Rinsing equipment<\/p>\n<\/li>\n Preparing samples for microscopy<\/p>\n<\/li>\n<\/ul>\n PBS comes in different forms depending on the application:<\/p>\n The most commonly used concentration for daily lab work.<\/p>\n A concentrated form that is diluted to 1X before use.<\/p>\n\n
\nWhy PBS Is Used in Labs<\/h2>\n
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\nTypes of PBS Solutions<\/h2>\n
1. 1X PBS (Working Solution)<\/strong><\/h3>\n
2. 10X PBS (Stock Solution)<\/strong><\/h3>\n
3. PBS with or without Calcium\/Magnesium<\/strong><\/h3>\n