PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R21238Ninhydrin Solution

Remel Inc. · NSN 6550-01-271-7646 · FSC 6550 · No Item Name Available
Verified by PartsTable
NSN 6550-01-271-7646 — this item is cataloged by the U.S. Government under National Stock Number 6550-01-271-7646. Primary manufacturer part number: R21238.
Features
  • Ninhydrin Solution — FSC 6550
  • General Characteristics Item Description: 3.5 PERCENT NINHYDRIN REAGENT; 25 ML BOTTLE; MAY BE USED IN RAPID HIPPURATE TEST
  • 3 verified cross-references
  • Primary manufacturer: Remel Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ninhydrin Solution, cataloged under National Stock Number 6550-01-271-7646, is classified within Federal Supply Class 6550 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is Remel Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: BT.

Technical Specifications
ParameterValue
NSN6550-01-271-7646
Primary Part NumberR21238
Item NameNinhydrin Solution
FSC / FSG6550 / 65 — No Item Name Available
ManufacturerRemel Inc.
StatusACTIVE
General Characteristics Item Description3.5 PERCENT NINHYDRIN REAGENT; 25 ML BOTTLE; MAY BE USED IN RAPID HIPPURATE TEST
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueBT
Verified Substitutes 6
5910-00-010-8720 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
5310-00-167-0816 INTERCHANGEABLE
Washer,flat
5110-00-260-1668 INTERCHANGEABLE
Reamer,hand
6685-01-077-569500187 INTERCHANGEABLE
Thermocouple
Simpson Electric Company, Inc.
5310-01-238-065021238 INTERCHANGEABLE
Washer,lock
Industrial Technologies and Services Llc
5120-01-297-7101EX212-3/8 INTERCHANGEABLE
Bit,screwdriver
Amsco Products Camcar Div Textron Inc
Cross-Reference Index
Part NumberManufacturer
21-238 Remel Inc. (USA)
R21238 PRIMARY Remel Inc. (USA)
NINHYDRIN REAGENT Remel Inc. (USA)
Related Parts
5910-00-010-8720INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
5310-00-167-0816INTERCHANGEABLE
WASHER,FLAT
5110-00-260-1668INTERCHANGEABLE
REAMER,HAND
6685-01-077-5695INTERCHANGEABLE
THERMOCOUPLE
00187
5310-01-238-0650INTERCHANGEABLE
WASHER,LOCK
21238
5120-01-297-7101INTERCHANGEABLE
BIT,SCREWDRIVER
EX212-3/8

Frequently Asked Questions

What is NSN 6550-01-271-7646?

NSN 6550-01-271-7646 is a Ninhydrin Solution, manufactured by Remel Inc., classified under FSC 6550 (No Item Name Available). Status: active.

What are the part numbers for NSN 6550-01-271-7646?

NSN 6550-01-271-7646 has 3 cross-referenced part numbers: 21-238 (Remel Inc.), R21238 (Remel Inc.), NINHYDRIN REAGENT (Remel Inc.).

What NSN replaces 6550-01-271-7646?

There are 6 known substitutes for 6550-01-271-7646: 5910-00-010-8720, 5310-00-167-0816, 5110-00-260-1668 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R21238?

Key specifications for R21238: Part Name Assigned by Controlling Agency: NINHYDRIN SOLUTION 3.5% 25ML MAY BE USED IN RAPID HIPPURATE TEST; General Characteristics Item Description: 3.5 PERCENT NINHYDRIN REAGENT; 25 ML BOTTLE; MAY BE USED IN RAPID HIPPURATE TEST. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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