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Mildform® 15N

for Pathology Research
Specification Assay :
Formaldehyde : 5.6 - 6.4 w/w%
Manufacturer :
FUJIFILM Wako Pure Chemical Corporation
Storage Condition :
Keep at RT.
  • Structural Formula
  • Label
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Product Number
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Barcode No
List Price
42.00 USD

Out of Stock

Barcode No
List Price
244.00 USD

In stock in Japan


Product Specification Sheet
Spectral Data
Certificate of Analysis
Calibration Certificate


Overview / Applications

Outline This product is for research use only. Do not administer it to human.



Formalin fixative for pathological tissues, deodorizedMildform(R) productsMildform(R) products, fixatives for pathological tissues, are neutral buffered formalin solution prepared according to Lillie's formulation to which wine extract* is added. The wine extract minimizes the irritating and unpleasant odor of formalin, however, with regard to operational safety, minimum degree of odor is present so that formalin can be recognized.

*Mechanism of wine extract's effect : The masking effect minimizes the irritating and unpleasant odor of formalin.


  1. Most suitable for tissue fixation of immunohistochemical staining by an immunoenzymatic technique.
  2. The fixation and osmosis are equivalent to that of neutral buffered formalin solution or greater.
Mildform(R) 15N
  • Concentration of formaldehyde solution : 15%
  • Formaldehyde Solution : 150mL
  • NaH2PO4 . 2H2O : 4.5g
  • Na2HPO4 : 6.5g
  • Methanol : -
  • Water : Add water to make the 1L solution.
  • Formaldehyde Content : 6%
  • pH : 7.0~7.5

  • Mildform(R)10N** (Wako Catalog#133-10311)
  • Mildform(R)10NM*** (Wako Catalog#132-10521)
  • Mildform(R)15N (Wako Catalog#132-14301)
  • Mildform(R)15NM (Wako Catalog#139-14311)
  • Mildform(R)20N (Wako Catalog#136-10041)
  • Mildform(R)20NM (Wako Catalog#139-10531)
N : signifying neutral. Mildform(R)s are produced based on neutral buffered formalin.M : signifying methanol content. Addition of methanol enhances osmosis into and fixation to tissues.

In general, NM-type is most suitable for rapid fixation with minimum length of time needed. Also suitable as a formalin-methanol fixative for fixing samples containing a large amount of connective tissues and adipose tissues.

Embedded Medium for Mouse and Rat tissues

  • Wako Catalog# 167-20501 Pathoprep(R)546, (2kg x 3)
  • Wako Catalog# 162-18961 Pathoprep(R)568, (500g x 12)
  • Wako Catalog# 165-19551 Pathoprep(R)580, (2kg x 3)


Appearance Colorless clear liquid
pH pH (25 degrees C) : 7.0 - 7.5
Density 1.021 - 1.027g/mL (20 degrees C)

Manufacturer Information


  • 15% Formalin Neutral Buffer Solution, Deodorized)
    Formaldehyde Neutral Buffer Solution

For research use or further manufacturing use only. Not for use in diagnostic procedures.

Product content may differ from the actual image due to minor specification changes etc.

If the revision of product standards and packaging standards has been made, there is a case where the actual product specifications and images are different.


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