The resistivity of this product has not been determined.
270733
Water
Water
1 of 1 reviewers received a sample product or took part in a promotion
suitable for HPLC
Synonym(s):
Aqua, Dihydrogen oxide
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1 L
$82.10
4 L
$188.00
4 X 4 L
$571.00
20 L
$799.00
About This Item
Linear Formula:
H2O
CAS Number:
Molecular Weight:
18.02
Beilstein:
2050024
EC Number:
MDL number:
UNSPSC Code:
12190000
PubChem Substance ID:
NACRES:
NA.21
technique(s):
HPLC: suitable
bp:
100 °C (lit.)
vapor pressure:
3 mmHg
Recommended Products
vapor density
<1 (vs air)
Quality Level
vapor pressure
3 mmHg
form
liquid
technique(s)
HPLC: suitable
evapn. residue
<0.0003%
refractive index
n20/D 1.34 (lit.)
pH
6.0-8.0 (25 °C)
bp
100 °C (lit.)
mp
0 °C (lit.)
density
1.000 g/mL at 3.98 °C (lit.)
λ
H2O reference
UV absorption
λ: 205 nm Amax: 0.01
λ: 210 nm Amax: 0.01
λ: 250-400 nm Amax: 0.005
SMILES string
O
InChI
1S/H2O/h1H2
InChI key
XLYOFNOQVPJJNP-UHFFFAOYSA-N
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General description
Water suitable for HPLC is commonly used as a solvent for isocratic elution in both cation and anion chromatography. Additionally, it is used as a component to prepare standard stock solutions, and for evaporation under a nitrogen stream in a water bath to concentrate the sample before LC-MS-MS analysis.[1] [2]
Application
Preparation Note
Product filtered through a 0.2 μm filter
Other Notes
Important notice
The article number 270733-6X1L will be discontinued. Please order the single bottle 270733-1L which is physically identical with the same exact specifications.
The article number 270733-6X1L will be discontinued. Please order the single bottle 270733-1L which is physically identical with the same exact specifications.
Storage Class Code
12 - Non Combustible Liquids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Do you know the resistivity value @ 25°C?
1 answer-
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdfHelpful?
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How is this water purified? is it distilled?
1 answer-
The water purification process involves several steps:
• The water initially passes through a carbon exchange tank to remove organic compounds.
• It is then filtered using a 1μm PE cartridge filter to remove any remaining impurities.
• Inorganic compounds are eliminated through deionization tanks, ensuring high purity. The resistivity of the water is checked during this stage.
•The water undergoes sterilization using UV light to eliminate any microorganisms.
• Finally, the water is filtered through a 0.2μm cartridge filter, and the resulting HPLC grade water is packaged in glass bottles.
Note: This information provides an overview of the typical water purification process and may vary depending on specific applications or systems.Helpful?
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Do you know the concentration of TOC in this water?
1 answer-
The concentration of TOC in this product is not determined. Product 78533, Water for TOC Analysis, may be of interest.
Please see the link below to review this product option:
https://www.sigmaaldrich.com/product/sial/78533Helpful?
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Is this product (HPLC grade water #270733) DNase-, RNase- and protease-free?
1 answer-
The item is not tested for the presence of DNA, RNA, and protease.
Please see the links below to review product options that include this testing:
W4502
https://www.sigmaaldrich.com/US/en/product/sigma/w4502
95284
https://www.sigmaaldrich.com/US/en/product/sigma/95284Note that the above options are NOT tested for suitability in HPLC.
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