Cleared Traditional

K933691 - SIGMA CO2 ALKALINE BUFFER REAGENT (FDA 510(k) Clearance)

Class II Chemistry device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K933691 · Sigma Chemical Co. · Chemistry device
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Dec 1993
Decision
141d
Days
Class 2
Risk

K933691 is an FDA 510(k) clearance for the SIGMA CO2 ALKALINE BUFFER REAGENT. Classified as Ph Rate Measurement, Carbon-dioxide (product code JFL), Class II - Special Controls.

Submitted by Sigma Chemical Co. (St. Louis, US). The FDA issued a Cleared decision on December 17, 1993 after a review of 141 days - within the typical 510(k) review window.

This device falls under the Chemistry FDA review panel, regulated under 21 CFR 862.1160 - the FDA in vitro diagnostics and chemistry framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Chemistry review framework, consistent with the majority of Class II 510(k) submissions.

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Submission Details

510(k) Number K933691 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received July 29, 1993
Decision Date December 17, 1993
Days to Decision 141 days
Submission Type Traditional
Review Panel Chemistry (CH)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
53d slower than avg
Panel avg: 88d · This submission: 141d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code JFL Ph Rate Measurement, Carbon-dioxide
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 862.1160
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Chemistry devices follow this clearance model.