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Inorganic Standards
Atomic Absorption Standards
Ionization Buffers
Matrix Modifiers
Releasing Agents
Single Element 1,000ug/ml
Environmental Standards by Method Number or Name
EPA Method 200.11 Revision 2.1
200.11 Single Element Set
Calibration Standards
Lab Performance Check (LPC)
Laboratory Fortifying Stock Solutions
Quality Control Standard
EPA Method 200.15 Revision 1.2
200.15 Single Element Set
Calibration Standards
EPA Method 200.7
Interference Check Standards
EPA Method 200.7 Revision 3.3
200.7 Rev3.3 Single Element Set
Laboratory Fortifying Stock Solutions
Laboratory Performance Check (LPC) Standard
Mixed Calibration Standards
Quality Control Standards
Tuning Solution
EPA Method 200.7 Revision 4.4
200.7 Rev4.4 Single Element Set
Instrument Performance Check
Lab Fortifying Solutions
Mixed Calibration Standards
Plasma Solution
Quality Control Standards
EPA Method 200.8 Revision 5.4 and 4.4
Calibration Standards
Internal Standard Solution
Quality Control Standards
Tuning Solution
EPA Method 200.9 Revision 2.2
200.9 Matrix Modifier
200.9 Single Element Set
EPA Method 300.0 Revision 2.1
300.0 Eluent Concentrates
300.0 Multi Anion Standards
300.0 Single Anion Sets
EPA Method 6020 CLP-M
Calibration Standard
CRDL Standard
Instrument Check Standards
Interference Check Standards
Internal Standard
Memory Check Standards
Spike Standards
Tuning Solution
Superfund CLP for GFAA
Calibration Standard
CCV/ICV Standard
GFAA Set
Mercury Standard
Postdigestion Spike Standard
Predigestion Spike Standard
Superfund CLP for ICP-AES
CRQL and CRDL Standards
Initial Calibration Verification
Instrument Calibration
Interference Check Standards
Spike Sample Analysis
Superfund CLP for ICP-MS
Calibration Standard
CCV/ICV Standard
CLP-MS Set
CRQL Standard
Interference Check Solution
Internal Standard Solution
Spike Standard
Tuning Solution
TCLP
TLCP Standards
Water Standards
Drinking Water Pollutant Standards
Groundwater and Wastewater Pollution Control Check Standards
ICP Standards and ICP-MS Standards
68 Element Standard
Calibrate and Matrix Blanks
Custom Standards
Gold Blank Standard
ICP Single Element Sets
ICP Standards - Single Elements
ALUMINUM
OSMIUM
ANTIMONY
ARSENIC
BARIUM
BERYLLIUM
BISMUTH
BORON
CADMIUM
CALCIUM
CARBON
CERIUM
CESIUM
CHROMIUM (+3)
CHROMIUM (+6)
COBALT
COPPER
DYSPROSIUM
ERBIUM
EUROPIUM
GADOLINIUM
GALLIUM
GERMANIUM
GOLD
HAFNIUM
HOLMIUM
INDIUM
IRIDIUM
IRON
LANTHANUM
LEAD
LITHIUM
LUTETIUM
MAGNESIUM
MANGANESE
MERCURY
MOLYBDENUM
NEODYMIUM
NICKEL
NIOBIUM
PALLADIUM
PHOSPHOROUS
PLATINUM
POTASSIUM
PRASEODYMIUM
RHENIUM
RHODIUM
RUBIDIUM
RUTHENIUM
SAMARIUM
SCANDIUM
SELENIUM
SILICON
SILVER
SODIUM
STRONTIUM
SULFUR
TANTALUM
TELLURIUM
TERBIUM
THALLIUM
THORIUM
THULIUM
TIN
TITANIUM
TUNGSTEN
URANIUM
VANADIUM
YTTERBIUM
YTTRIUM
ZINC
ZIRCONIUM
Instrument Calibration
Internal Standard Mixes
Multi-Element Standards
Quality Control Standards
Single Internal Standards
Tuning Solution
Ion Chromatography Standards
Eluent Concentrates
Ion Chromatography Multi-Element Standards
Multi Anion Standards
Multi Cation Standards
Single Anion Standards
Single Cation Standards

Products

Atomic Absorption Standards
Ionization Buffers
Matrix Modifiers
Releasing Agents
Single Element 1,000ug/ml
Environmental Standards by Method Number or Name
EPA Method 200.11 Revision 2.1
200.11 Single Element Set
Calibration Standards
Lab Performance Check (LPC)
Laboratory Fortifying Stock Solutions
Quality Control Standard
EPA Method 200.15 Revision 1.2
200.15 Single Element Set
Calibration Standards
EPA Method 200.7
Interference Check Standards
EPA Method 200.7 Revision 3.3
200.7 Rev3.3 Single Element Set
Laboratory Fortifying Stock Solutions
Laboratory Performance Check (LPC) Standard
Mixed Calibration Standards
Quality Control Standards
Tuning Solution
EPA Method 200.7 Revision 4.4
200.7 Rev4.4 Single Element Set
Instrument Performance Check
Lab Fortifying Solutions
Mixed Calibration Standards
Plasma Solution
Quality Control Standards
EPA Method 200.8 Revision 5.4 and 4.4
Calibration Standards
Internal Standard Solution
Quality Control Standards
Tuning Solution
EPA Method 200.9 Revision 2.2
200.9 Matrix Modifier
200.9 Single Element Set
EPA Method 300.0 Revision 2.1
300.0 Eluent Concentrates
300.0 Multi Anion Standards
300.0 Single Anion Sets
EPA Method 6020 CLP-M
Calibration Standard
CRDL Standard
Instrument Check Standards
Interference Check Standards
Internal Standard
Memory Check Standards
Spike Standards
Tuning Solution
Superfund CLP for GFAA
Calibration Standard
CCV/ICV Standard
GFAA Set
Mercury Standard
Postdigestion Spike Standard
Predigestion Spike Standard
Superfund CLP for ICP-AES
CRQL and CRDL Standards
Initial Calibration Verification
Instrument Calibration
Interference Check Standards
Spike Sample Analysis
Superfund CLP for ICP-MS
Calibration Standard
CCV/ICV Standard
CLP-MS Set
CRQL Standard
Interference Check Solution
Internal Standard Solution
Spike Standard
Tuning Solution
TCLP
TLCP Standards
Water Standards
Drinking Water Pollutant Standards
Groundwater and Wastewater Pollution Control Check Standards
ICP Standards and ICP-MS Standards
68 Element Standard
Calibrate and Matrix Blanks
Custom Standards
Gold Blank Standard
ICP Single Element Sets
ICP Standards - Single Elements
ALUMINUM
OSMIUM
ANTIMONY
ARSENIC
BARIUM
BERYLLIUM
BISMUTH
BORON
CADMIUM
CALCIUM
CARBON
CERIUM
CESIUM
CHROMIUM (+3)
CHROMIUM (+6)
COBALT
COPPER
DYSPROSIUM
ERBIUM
EUROPIUM
GADOLINIUM
GALLIUM
GERMANIUM
GOLD
HAFNIUM
HOLMIUM
INDIUM
IRIDIUM
IRON
LANTHANUM
LEAD
LITHIUM
LUTETIUM
MAGNESIUM
MANGANESE
MERCURY
MOLYBDENUM
NEODYMIUM
NICKEL
NIOBIUM
PALLADIUM
PHOSPHOROUS
PLATINUM
POTASSIUM
PRASEODYMIUM
RHENIUM
RHODIUM
RUBIDIUM
RUTHENIUM
SAMARIUM
SCANDIUM
SELENIUM
SILICON
SILVER
SODIUM
STRONTIUM
SULFUR
TANTALUM
TELLURIUM
TERBIUM
THALLIUM
THORIUM
THULIUM
TIN
TITANIUM
TUNGSTEN
URANIUM
VANADIUM
YTTERBIUM
YTTRIUM
ZINC
ZIRCONIUM
Instrument Calibration
Internal Standard Mixes
Multi-Element Standards
Quality Control Standards
Single Internal Standards
Tuning Solution
Conductivity Standards
Ion Chromatography Standards
Eluent Concentrates
Ion Chromatography Multi-Element Standards
Multi Anion Standards
Multi Cation Standards
Single Anion Standards
Single Cation Standards
pH Calibration Buffers

Custom Request

custom

icpbevelExaxol welcomes orders for custom multi-element ICP standards as well as other custom standards. Exaxol custom standards are carefully prepared using our high purity standardized solutions that are directly traceable to NIST. The quality of our custom standards is evidenced by the loyalty of our customers who continue to trust us with their custom blend needs year after year. Each custom blend is submitted to a triple check QC Procedure which verifies: elements, concentration, lot numbers, expiration date, aliquots, pipets, and matrices. All certification data is included on the Certificate of Analysis which is signed and certified by two chemists.

Read more: Custom Multi-element Standards

The titration of carbonates (typically sodium carbonate) involves a weak base vs a strong acid (Hydrochloric 0.1N) and color change results with simple methyl orange are quite subjective, as the color change is very gradual. A good alternative is mixed methyl orange-xylene cyanole FF.

Read more: Titrating Carbonates with Alternative Indicator

pH Buffer Calibration work requires calibration standards that are dependable and accurate to the specifications expected/listed. Providing your equipment is maintained well, measuring pH should not be a chore.Be sure you go through the meter checkout procedure for your meter according to manufacturer's directions. Also, perform a check on your electrode.

Read more: pH Buffer Calibration Verification

Blending stock standards for your own custom in house internal standard takes a little time but is very economical provided you already have the stock standards available. Pre rinse all glassware/plasticware with dilute nitric or hydrochloric, depending on matrix. Rinse 3X with high purity DI water. Volumetric pipettes (class A calibrated) are a good tool for this.

Read more: Blending elements for ICP, ICP-MS, ICP-OES standards

Often, IC standards are described by an element or by an ionic specie which is the source of the element. An example is nitrogen (element) and Ammonium (ionic specie or polyatomic cation). It is easy to confuse concentration values for such a standard unless one is specific about the "title" of the ionic standard. A ammonium standard of 1000ppm (μg/ml) is for the cation NH4+ at 1000ppm, not Nitrogen at 1000ppm. The nitrogen value is much less, of course due to the hydrogens being factored out of the calculation. Where one talks of a nitrogen standard from an ammonium source the value of nitrogen then becomes 1000ppm, and the ammonium is therefore much higher in value, since you must ADD the hydrogens to the ppm weight.

Read more: Ion Chromatography-Analytes/Sources

For years Exaxol has been a steady contributor to the leading and most comprehensive publication on high purity compounds "Purification of Laboratory Chemicals" by Wilfred Armarego and Christina Li Lin Chai. Information and data provided by Exaxol includes metal impurities detected by ICP-MS on various purified inorganic compounds, most of which include starting material grade and source of manufacture.

ICP-MS results are listed showing decreasing levels with subsequent recrystallizations providing the reader with an idea of what to expect as typical results for a given grade or source. Also, advice on the purification procedures of several inorganic compounds were provided over the years.

Exaxol is enhancing its current offering of conductivity standards to include a TDS (total dissolved solids) value right on the label for the user's convenience. The tolerance for a standard is a realistic and competitive 0.5%. The TDS values will be based on KCl.

Read more: Conductivity/TDS Standards

TDS is the measure of total dissolved solids in fresh water sources. It includes inorganics and organics that typically can pass through a 2 micron filter. Measurement occurs in reality via conductivity. Cations and anions emit charges and are a source of this "conductivity". There are benchtop as well as portable field versions of these meters for convenience.

Read more: TDS vs Hardness vs Conductivity

Formazin has been used as a turbidity standard to test cloudiness in water for many decades. The standard unit of measurement is the NTU or nephelometric Turbidity Unit. Stock solutions are typically at 4000 NTU's. This concentration is stable for at least 1 year, although our customers frequently report stability/reliability/consistency up to the 2 year date from manufacture.

Read more: Formazin Turbidity Standards

Our embedding/mounting media is ideal for frozen tissue analysis for surgical pathology and frozen sectioning. It dries clear, does not curl, is non toxic, and there are no traces after drying. Supports tissue during cryotomy. Convenient squeeze bottle with yorker squirt tip.

Read more: Frozen Tissue Mounting Media

Hematoxylin stains are commonly employed for histologic studies, often employed to color the nuclei of cells (and a few other objects, such as keratohyalin granules) blue. The mordants used to demonstrate nuclear and cytoplasmic structures are alum and iron, forming lakes or colored complexes (dye-mordant-tissue complexes), the color of which will depend on the salt used. Aluminum salt lakes are usually colored blue white while ferric salt lakes are colored blue-black.

Read more: Hematoxylin Harris Stain

ISO Certification

Exaxol ISO Certification
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nist1 copy
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Mary Wells, Baton Rouge, LA

I love ordering from your website. It is fast and user friendly. Like many of your customers, I wear more than one hat, and your website makes it easy to place orders on the fly while I am handling other tasks.

Thanks for this new shopping cart!