Fixatives
- Shelf Life is one year from date manufactured unless otherwise stated.
- Store at 15-30°C unless otherwise stated.
Fixative |
Application |
Part# |
Formaldehyde |
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Formaldehyde 37 - 40%, ACS | Concentrated formaldehyde with methyl alcohol stabilizer | 1089 |
Formalin 10%, Phosphate Buffered (Available in Vials) |
Traditional all purpose fixative | 1090 |
Formalin 23%, Phosphate Buffered | Higher strength buffered formula for whole brain specimens | 1091 |
Zinc Formalin, Unbuffered Zinc Sulfate | Excellent fixative to preserve nuclear detail | 1482 |
Formalin, Alcoholic, 10/90 | Alcoholic formula for rapid penetration | 10932 |
Formalin, Alcoholic, 20/80 | Alcoholic formula for rapid penetration | 10933 |
Paraformaldehyde 10%, Buffered | Methyl alcohol free formaldehyde and electron microscopy | 13301 |
Hematopoetic Fixatives |
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AZF Fixative - Acetic Zinc Formalin (Available in Vials) |
Proven substitute for hazardous mercury based fixatives | 1009 |
B-5 Fixative Modified, Zinc Chloride | Mercury free formula for hematopoetic specimens | 1015 |
Zenker Fixative, Modified, Zinc Chloride | Mercury free formula for hematopoetic specimens and mordant for PTAH stain | 1461 |
Alcohol, Methanol Anhydrous, ACS | Blood smears | 12236 |
Specialty |
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Bouin Fluid | Picric Acid based fixative good for GI biopsies and as a mordant for trichrome staining | 1020 |
Davidson (Hartmann's) Fixative | Formalin alcohol acetic acid formula | 1045 |
Lymph Node Grossing Aid | Special fixative to assist in the visualization of lymph nodes | 1093 |
Hollande Fixative (Available in Vials) |
Picric Acid based fixative good for GI biopsies | 1208 |
Differential Stain Fixative | Methanol based fixative for metachromatic stain | 10523 |
Formic Acid 96%, ACS | Post fixation inactivation of CJD virus | 10943 |
Formalin 10%, in Saline | Floatation techniques for ova and parasites | 10912B |
EM |
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Carson Modified Millonig Formalin | Classic Carson - Millonig buffer with NaOH | 12445 |
Glutaraldehyde 50%, Reagent | Concentrated glutaraldehyde | 1123 |
Karnovsky Fixative (Available in Vials) |
EM fixative, Formol- Glutaraldehyde | 1215 |
Karnovsky Fixative, Phosphate Buffered | EM fixative, Formol- Glutaraldehyde fully buffered | 12158 |
Zamboni Fixative | EM fixative with picric acid also has light microscopy applications | 1459 |
Cytology |
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Saccomano Collection Fluid | Standard cytology fixative | 1361 |
Transport Media (Non Fixative) |
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Michel Transport Medium | Preserves morphology & antigenicity during transport of tissues | 1242 |
Michel Wash Solution | Used to rinse transport medium from tissue prior to freezing | 1243 |
Mercury Substitutes
AZF FixativeAZF Fixative
(use: Excellent replacement for Mercury based fixative.) Working Solution. MERCURY FREE!
- Shelf Life is 2 years from date of manufacture.
AZF Fixative Vial
- Shelf-Life is 2 years from date of manufacture.
B-5 Fixative Modified, Zinc ChlorideB-5 Fixative Modified, Zinc Chloride
- Shelf Life is 2 years from date of manufacture.
Zenker Fixative, Modified, Zinc ChlorideZenker Fixative, Modified, Zinc Chloride
No Mercury!
Electron Microscopy
Carson Modified Millonig FormalinCarson Modified Millonig Formalin
(use: Light & Electron Microscopy)
- Shelf Life is 2 years from date of manufacture.
Carson Mod. Millonig Formalin Vials
- Shelf Life is 2 years from date of manufacture.
Glutaraldehyde 50%, Reagent Grade
(use: Electron Microscopy)
- Shelf Life is 2 years from date of manufacture.
Karnovsky FixativeKarnovsky Fixative
(use: EM; Rapid penetration, esp. neurological tissues.) Paraformaldehyde, Glutaraldehyde & NaOH.
(Shelf Life 6 mos. Store @ 4°C.)
Karnovsky Fixative Vial
(Shelf Life 6 mos. Store @ 4°C.)
Karnovsky Fixative, Phosphate Buffered
(Shelf Life 6 mos. Store @ 4° C.)
Bulk Volumes
Formalin 10%, Phosphate Buffered
- Shelf Life is 2 years from date of manufacture.

Formalin Concentrate Form-C (Buffered)
Dilute 1 part concentrate to 4 parts DI Water. One gallon of concentrate makes 5 gallons of 10% NBF. Thoroughly mixes in 30 seconds.
Benefits:
- Reduces shipping costs!
- Saves 80% of valuable storage space!
- Already Buffered!
AZF Fixative Bulk Volumes
Click here for part numbers and pricing. These products are located in our B-5 Mercury Substitute section.
Formaldehyde 37-40%, ACS
- Shelf Life is 2 years from date of manufacture.
Fomalin, Alcoholic, 10/90
- Shelf Life is 2 years from date of manufacture.
Formalin, Alcoholic, 20/80
- Shelf Life is 2 years from date of manufacture.
Formalin 23%, Phosphate Buffered
(use: CNS tissue e.g. large animal brains.)
Formalin 10%, in Saline
(use: Used in floatation techniques for ova and parasites.)
- Shelf Life is 2 years from date of manufacture.
Lymph Node Grossing Aid (Formaldehyde in Ethanol, Acetic Acid)Lymph Node Grossing Aid (Formaldehyde in Ethanol, Acetic Acid)
(use: Enhances gross visibility of lymph nodes in large resections.)
Vials

Formalin Vial 10%, Phosphate Buffered
- Shelf Life is 2 years from date of manufacture.
AZF Fixative Vials
Disposal Products

Formalex GREEN Formalin Neutralizer
Liquid Neutralizer for Formalin Waste. Easily and safely neutralize formalin waste to a non-hazardous, non-toxic solution for sink disposal. The improved formula eliminates any sludgy residue and does not require any pH adjustment. It contains no phosphates and is non-vapor forming. Use spray bottle for easy clean of small spills! (32 ounces of Formalex-Green will neutralize one gallon of spent formalin)

FORM-ZERO Formalin Neutralizer
Powder Neutralizer for Formalin Waste A unique powder reagent blend that quickly neutralizes formaldehyde & glutaraldehyde for sink disposal in 20 minutes! One bottle will neutralize one gallon of 10% formalin or 4% glutaraldehyde. No pH adjustment required.
FrozFix
FrozFix® Fixative
Michel Transport Medium
Michel Transport MediumMichel Transport Medium
(use: Preserves morphology & antigenicity during transport of tissues.)
Michel Transport Medium VialMichel Transport Medium Vial
(use: Preserves morphology & antigenicity during transport of tissues.)
Michel Wash SolutionMichel Wash Solution
Cytology
Saccomanno Collection FluidSaccomanno Collection Fluid
Other Fixatives
Bouin Fluid Vial
"O-ring" lid for better transport. Ship Ground Only.
- Shelf Life is 2 years from date of manufacture.
Differential Stain Fixative
Solution C of the Differential Stain Kit.
- Shelf Life is 2 years from date of manufacture.
Formic Acid 96%, ACSFormic Acid 96%, ACS
- Shelf Life is 2 years from date of manufacture.
Hollande FixativeHollande Fixative
(use: Recommended for GI Biopsies.)
- Shelf Life is 2 years from date of manufacture.
Methanol Anhydrous, ACS
(use: Fixative for blood smears.)
Part numbers and pricing are located in our Alcohol Section, CLICK HERE
Millonig Formalin
Paraformaldehyde 10%, Buffered
(use: Cell flow fixation.)
Wright Stain Fixative
See Methanol in our Alcohol Section.
Part numbers and pricing are located in our Alcohol Section, CLICK HERE
Zinc Formalin FixativeZinc Formalin Fixative
(use: On auto processor or as a prefixative. Working solution. Replacement for Zinc Formalin Sensitizer in Steiner-Chapman Stain.)
- Shelf Life 2 years from date of manufacture.