PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M9140-25GMethylene Blue,chloride Stain

Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc · NSN 6550-01-243-7107 · FSC 6550 · No Item Name Available
Verified by PartsTable
NSN 6550-01-243-7107 — this item is cataloged by the U.S. Government under National Stock Number 6550-01-243-7107. Primary manufacturer part number: M9140-25G.
Features
  • Methylene Blue,chloride Stain — FSC 6550
  • Supplementary Features: FOR HISTOLOGICAL AND BACTERIOLOGICAL STAINING
  • Primary Container Type: BOTTLE
  • Physical Form: POWDER
  • Primary Container Content Quantity: 25.000 GRAMS G
  • 7 verified cross-references
  • Primary manufacturer: Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Methylene Blue,chloride Stain, cataloged under National Stock Number 6550-01-243-7107, 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 Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: BT.

Technical Specifications
ParameterValue
NSN6550-01-243-7107
Primary Part NumberM9140-25G
Item NameMethylene Blue,chloride Stain
FSC / FSG6550 / 65 — No Item Name Available
ManufacturerSigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc
StatusCANCELLED
Supplementary FeaturesFOR HISTOLOGICAL AND BACTERIOLOGICAL STAINING
Primary Container TypeBOTTLE
Physical FormPOWDER
Primary Container Content Quantity25.000 GRAMS G
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueBT
Verified Substitutes 7
4720-00-139-396828412 INTERCHANGEABLE
Hose,nonmetallic
Gates Corporation
4510-00-351-28272841-2 INTERCHANGEABLE
Tank Top,toilet,rig
Mag Aerospace Industries, Llc Div Safran Cabins
5305-00-964-0642 INTERCHANGEABLE
Screw,cap,hexagon Head
6505-01-181-1734 INTERCHANGEABLE
Methylene Blue Injection
4730-01-399-741528412 INTERCHANGEABLE
Adapter,straight,tube to Boss
Allied Systems Company Dba Allied Systems Co
5120-01-601-5164 INTERCHANGEABLE
Wrench,adjustable
4730-01-645-667028412 INTERCHANGEABLE
Elbow,pipe
United States Plastic Corp
Cross-Reference Index
Part NumberManufacturer
NC0772734 Thermo Fisher Scientific Chemicals, Inc. (USA)
1682745 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
284/12 E M Science Div of E M Industries Inc (USA)
M9140-25G PRIMARY Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc (USA)
6550NCN251314 Defense Medical Standardization Board (USA)
METHYLENEBLUE Biological Stain Commission Biochemistry Dept Box 607 University of Rochester Medical Ctr (USA)
284-12 Emd Chemicals Inc. (USA)
Related Parts
4720-00-139-3968INTERCHANGEABLE
HOSE,NONMETALLIC
28412
4510-00-351-2827INTERCHANGEABLE
TANK TOP,TOILET,RIG
2841-2
5305-00-964-0642INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
6505-01-181-1734INTERCHANGEABLE
METHYLENE BLUE INJECTION
4730-01-399-7415INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
28412
5120-01-601-5164INTERCHANGEABLE
WRENCH,ADJUSTABLE
4730-01-645-6670INTERCHANGEABLE
ELBOW,PIPE
28412

Frequently Asked Questions

What is NSN 6550-01-243-7107?

NSN 6550-01-243-7107 is a Methylene Blue,chloride Stain, manufactured by Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc, classified under FSC 6550 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6550-01-243-7107?

NSN 6550-01-243-7107 has 7 cross-referenced part numbers: NC0772734 (Thermo Fisher Scientific Chemicals, Inc.), 1682745 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia), 284/12 (E M Science Div of E M Industries Inc), M9140-25G (Sigma-Aldrich, Inc. Dba Sigma-Aldrich Sales, Inc), 6550NCN251314 (Defense Medical Standardization Board) and 2 more.

What NSN replaces 6550-01-243-7107?

There are 7 known substitutes for 6550-01-243-7107: 4720-00-139-3968, 4510-00-351-2827, 5305-00-964-0642 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M9140-25G?

Key specifications for M9140-25G: Supplementary Features: FOR HISTOLOGICAL AND BACTERIOLOGICAL STAINING; Primary Container Type: BOTTLE; Special Features: METHYLENE BLUE, CERTIFIED, DYE CONTENT, 82%, CERTIFIED BY THE BIOLOGICAL STAIN COMMISSION, POWDER; COLOR: DARK GREEN; BOTTLE OF 25 GRAM. G; Physical Form: POWDER. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6550-01-243-7107 still in active supply?

NSN 6550-01-243-7107 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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