Tris HCl buffers at pH 7.4 are widely used in molecular biology and biochemistry for maintaining stable conditions during experiments. This guide focuses on reliable 1 M Tris HCl buffers and related products that target pH 7.4 at practical temperatures. It helps researchers choose the right concentration, packaging, and storage for their workflows. The top picks below are best suited for researchers needing consistent buffering in basic to near-neutral conditions, including cell culture prep and DNA/RNA work.
Buyer types: (1) Lab managers needing bulk or long shelf-life options; (2) bench scientists requiring ready-to-use bottles for quick setup; (3) researchers needing precise pH control in biological assays; (4) facilities seeking ISO-certified manufacturing for traceability. The following table summarizes five strong options and how they compare on core criteria such as concentration, packaging, and pH precision.
| Product | Concentration | pH (25°C) | Packaging | Best For |
|---|---|---|---|---|
| Tris-HCl Buffer, pH 7.4 [1M] – 1000 ml | 1 M | 7.4 | 1000 ml bottle | Labs needing bulk, ISO-certified manufacturing, and flexible usability. |
| Tris HCl Buffer, 1M, pH 7.4 (25 ºC), 100mL, One Bottle | 1 M | 7.4 (25°C) | 100 mL bottle | Bench scientists requiring ready-to-use small volumes. |
| Tris HCl Buffer, 1M, pH 7.4 (25 ºC), 100mL, Case of 6 Bottles | 1 M | 7.4 (25°C) | 6 x 100 mL | Multi-user labs or teaching facilities needing multiple vials. |
| TRIS Hydrochloride [Tris(hydroxymethyl) aminomethane HCl], 500 Grams | Not specified (solid) | Not specified | Bulk solid (container) | Prep work requiring solid Tris HCl for custom buffers. |
| TRIS Hydrochloride [Tris(hydroxymethyl) aminomethane HCl], 100 Grams | Not specified (solid) | Not specified | Bulk solid (smaller quantity) | Small lab projects or teaching kits needing precise gram quantities. |
Tris-HCl Buffer, pH 7.4 [1M] – 1000 ml
![Tris-HCl Buffer, pH 7.4 [1M] - 1000 ml](https://m.media-amazon.com/images/I/31Hra4HFjcL._SL500_.jpg)
Brand: eCon Lab Supply. Features: Manufactured in ISO 9001 and 13485 certified USA facility; For research use only; Good Manufacturing Practices in a certified clean room. This product is best for labs that prioritize traceability and GMP-style control during buffer preparation. Caution: Not for human or animal clinical use.
Tris HCl Buffer, 1M, pH 7.4 (25 ºC), 100mL, One Bottle
Brand: SAPRA Biomedicals. Features: 1 M concentration; calibrated pH 7.3–7.5 at 25°C; stable 2–30°C; ideal for biological research. Best for researchers needing precise, ready-to-use small-volume buffers. Caution: Suitable for research use only, not clinical applications.
Tris HCl Buffer, 1M, pH 7.4 (25 ºC), 100mL, Case of 6 Bottles
Brand: SAPRA Biomedicals. Features: 1 M concentration; pH 7.3–7.5 at 25°C; stable 2–30°C; case of six bottles for shared lab use. Best for labs with multiple users or shared resources. Limitation: Case packaging may require inventory tracking for re-ordering.
TRIS Hydrochloride [Tris(hydroxymethyl) aminomethane HCl], 500 Grams
Brand: RPI. Features: Solid Tris HCl suitable for bulk buffer preparation; described for research and manufacturing use. Best for labs that want to customize buffer recipes from a solid base. Caution: Not intended for food or drug use; verify compatibility with intended protocol.
Tris HCl Buffer, 1M, pH 8.0 (25 ºC), 500mL, One Bottle
Brand: SAPRA Biomedicals. Features: 1 M acid-base buffer with pH 8.0 at 25°C; provides a useful contrast for experiments requiring slight alkaline conditions. Best for labs needing pH control range around 8.0. Limitation: Not at pH 7.4 and should not replace 7.4-specific buffers in compatible protocols.
Buying Guide
What concentration should I choose? If you need flexibility for varied protocols, 1 M is a common standard that can be diluted to lower strengths. For teaching labs or bench work, 100 mL bottles are convenient; for bulk production or long-term storage, 1 L bottles or cases deliver efficiency.
How important is pH accuracy at 25°C? pH adjustments at 25°C are typical references. If your experiments occur at different temperatures, verify the specified pH range (often 7.3–7.5 or 7.9–8.1) to ensure buffer performance under actual conditions.
What packaging suits my workflow? Single bottles support rapid setup; cases or bulk solids suit shared facilities and inventory management. Consider ISO-certified suppliers if traceability and quality systems matter for your project.
What storage conditions are essential? Most 1 M Tris HCl buffers are stable at 2–30°C. Avoid repeated freeze-thaw cycles and protect from direct sunlight to preserve buffer integrity over time.
Are there safety or usage cautions? These buffers are for research use only. Do not use for human or animal clinical applications unless the product specification explicitly allows it. Confirm compatibility with your buffer recipes and downstream assays.
Frequently Asked Questions
- What does 1 M Tris HCl mean? It means one mole of Tris hydrochloride per liter of solution, providing a standard buffering capacity for many lab protocols.
- Can these buffers be used for cell culture? Some products are suitable for basic buffering in cell culture prep, but always follow the supplier’s stated use and ensure compatibility with your cells and media.
- Why is pH specified at 25°C? The pH of buffers shifts with temperature; 25°C is a common reference point for consistency across experiments.
- Is solid Tris HCl appropriate for all buffer prep? Solid forms allow custom buffer formulations, but you must accurately weigh and dissolve them to achieve the desired final concentration and pH.
- What should I do to avoid buffer degradation? Store at recommended temperatures, minimize exposure to moisture, and use within the indicated shelf life to maintain buffering performance.
- Are these products GMP-compliant? Some options mention ISO/GMP-related manufacturing practices; check the product page for exact quality certifications and documentation.
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