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TAPS (N-[Tris(hydroxymethyl)methyl]-3-aminopropanesulfonic acid) is a zwitterionic biological buffer commonly used in biochemical and molecular biology research.
Chemical Formula: C₇H₁₇NO₆S
pKa: 8.4 at 25°C (effective range: 7.7–9.1), ideal for near-neutral to mildly alkaline conditions.
Properties:
Low temperature sensitivity.
Minimal metal ion binding → reduces interference in enzymatic/metabolic studies.
High solubility in water.
Chemically stable and non-reactive with most biochemical reagents.
Electrophoresis (e.g., DNA/RNA gels).
Cell culture media and protein purification.
Enzyme assays requiring stable pH near 8.4.
Alternative to Tris buffers with better pH stability.
Non-toxic at standard concentrations; handle with basic lab precautions.
| Items | Specifications | Results |
| Appearance | White powder | Conforms |
| Assay | 99.0%~101.0% | 100.48% |
| Loss on drying | ≤1.0% | 0.03% |
| Heavy metals | ≤5ppm | Conforms |
| Product parameters | |
| Cas number: | 29915-38-6 |
| Appearance: | White powder |
| Purity: | 99.0%~101.0% |
| Package details: | 1kg/foil bag; 25kg/fiber drum |
| Brand: | Fortunachem |
"TAPS" is an acronym with several common meanings, depending on the context:
The Military Bugle Call (Most Common Meaning):
This is the most widely recognized meaning, especially in the US and allied militaries.
It's a short, distinctive melody of 24 notes played on a bugle (or trumpet).
Purpose: Primarily used at military funerals, memorial services, and ceremonies to honor deceased service members. It signifies "lights out" or the end of the day.
History: Its official use in US military funerals dates back to the Civil War era (though its exact origin is debated). It evokes deep emotion and respect.
Significance: Hearing TAPS is a powerful symbol of remembrance and the final farewell to a fallen comrade.
University of Southern California (USC) Department of Public Safety:
USC's police and security department is officially named Department of Public Safety (DPS), but it is universally known on campus and in the surrounding area as "TAPS" (Trojan Assistance and Protection Service).
Function: Provides law enforcement, security patrols, emergency response, crime prevention, and safety services for the USC campuses and surrounding community.
Chemistry/Biology Buffer Solution:
TAPS is a common Good's buffer used in biochemistry and molecular biology.
Chemical Name: Tris(hydroxymethyl)methylaminopropanesulfonic acid.
Purpose: Used to maintain a stable pH (around pH 8.0-9.0) in laboratory experiments, especially those involving biological molecules like proteins and enzymes that are sensitive to pH changes.
Trusted Automated Personnel System (US Government - Historical):
TAPS was a system used by the U.S. Office of Personnel Management (OPM).
Purpose: It allowed federal employees and military personnel to securely access, review, and update their own official personnel records online. It was phased out and replaced by newer systems like the Employee Personal Page (EPP) on the Employee Express portal.
How to know which one is meant?
Context is Key:
If the topic is military, funerals, remembrance, or ceremonies, it almost certainly refers to the bugle call.
If the topic relates to USC, campus safety, or policing in Los Angeles near USC, it refers to their Department of Public Safety.
If the context is scientific research, lab work, chemistry, or biology, it likely refers to the buffer solution.
If discussing US federal government HR systems (especially historically), it might refer to the personnel system.
Given its overwhelming cultural significance, if no context is provided, the military bugle call is the most probable meaning.
Used as a biological buffer.
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