The conductivity of this water is not determined. Currently, there is no Molecular Biology grade water product available that is tested for conductivity.
W4502
Water
suitable for electrophoresis, PCR
Water
Synonym(s):
DNase-Free Water, Not DEPC Treated, Nuclease-Free Water, Protease-Free Water, RNase-Free Water
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About This Item
Linear Formula:
H2O
CAS Number:
Molecular Weight:
18.02
Beilstein:
2050024
EC Number:
MDL number:
UNSPSC Code:
12191602
PubChem Substance ID:
NACRES:
NA.31
Technique(s):
PCR: suitable
electrophoresis: suitable
electrophoresis: suitable
Bp:
100 °C (lit.)
Vapor pressure:
3 mmHg
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Product Name
Water, Nuclease-Free Water, for Molecular Biology
vapor density
<1 (vs air)
Quality Level
vapor pressure
3 mmHg
sterility
0.1 μm filtered
form
liquid
technique(s)
PCR: suitable
electrophoresis: suitable
refractive index
n20/D 1.34 (lit.)
pH
5-7
bp
100 °C (lit.)
mp
0 °C (lit.)
density
1.000 g/mL at 3.98 °C (lit.)
foreign activity
DNase, RNase, Protease, free
SMILES string
O
InChI
1S/H2O/h1H2
InChI key
XLYOFNOQVPJJNP-UHFFFAOYSA-N
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1 of 4
This Item | 9801-OP | 95289 | 95284 |
|---|---|---|---|
| technique(s) PCR: suitable, electrophoresis: suitable | technique(s) - | technique(s) - | technique(s) FISH: suitable |
| Quality Level 200 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| form liquid | form liquid | form liquid | form liquid |
| mp 0 °C (lit.) | mp 0 °C (lit.) | mp 0 °C (lit.) | mp 0 °C (lit.) |
| refractive index n20/D 1.34 (lit.) | refractive index n20/D 1.34 (lit.) | refractive index n20/D 1.34 (lit.) | refractive index n20/D 1.34 (lit.) |
| density 1.000 g/mL at 3.98 °C (lit.) | density 1.000 g/mL at 3.98 °C (lit.) | density 1.000 g/mL at 3.98 °C (lit.) | density 1.000 g/mL at 3.98 °C (lit.) |
Application
Features and Benefits
- Nuclease-Free Water
- DNase-Free, RNase-Free, Protease- Free
- Not DEPC Treated
- 0.1 um Filtered
- Prepared from Double Distilled and Deionized Water
- Suitable for use in Molecular Applications
This product is 0.1um filtered. It is designated as a Molecular Biology Reagent and is suitable for molecular biology applications. This product has been analyzed for the absence of nucleases and proteases, and has undergone bioburden analysis. It has not been treated with diethyl pyrocarbonate (DEPC).
Preparation Note
This product is prepared from double distilled and deionized water
Other Notes
Easily compare specifications for Water products with the Water specification table.
Storage Class Code
12 - Non Combustible Liquids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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W4502 Millipore Water: what is the ohms of this water?
1 answer-
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Do you have stability data for W4502 for evaluating if Shelf Life can be extended?
1 answer-
This water product is not assigned an expiration or retest date. In the original sealed container the material is stable nearly indefinitely. Items that are not assigned an expiration date are warranteed for 1 year from the date of shipment.
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Is this water sterile? Can this be used for cell culture?
1 answer-
Product W4502 is not sterile, this product is prepared from Double Distilled and Deionized Water. This product is best suitable to use in molecular biology applications. See product W3500 for Sterile, Tissue Culture grade Water:
https://www.sigmaaldrich.com/product/sigma/w3500Helpful?
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In what vessel does this product come? A bottle, a bag with a spigot, etc.?
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This product is packaged in square PET square bottles. To request a quote for larger volumes or specialized packaging, please submit a request at the link below:
https://www.sigmaaldrich.com/services/support/bulk-quotation-requestHelpful?
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This product does not list an expiration date on the label. Could someone provide an expiration for lot number BCCH7145?
1 answer-
This product does not contain an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services
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