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You can also contact us by email at info@exaxol.com
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Technical experts are available via phone or fax from:
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Resources
Sodium Hydroxide Standardized/Normal Solutions
Sodium hydroxide, also known in industry as caustic soda and lye, has one of the highest production volumes of inorganic chemicals worldwide, estimated at about
Potassium Iodate (and Iodide)
Potassium Iodate (KIO3) is used commercially in the food industry, primarily as an additive for table salt to prevent a thyroid disease called Goiter. It
Potassium Hydroxide Solutions
Potassium hydroxide (KOH) was discovered by British scientist Sir Humphry Davy in 1807. He used electrolysis to isolate KOH. He later also used this method
Potassium Bromate Standard Solutions
Commercial uses of potassium bromate includes its use in the baking industry, bleaching of dough, and enhancement of the process of rising of the dough.
Perchloric acid 0.1N in Acetic Acid
In pure form, perchloric acid (70%) is potentially dangerous if certain conditions are present. It is an oxidizer, and it is also used to synthesize
Kjeldahl Nitrogen Analysis
This method was developed by Johan Kjeldahl in 1883 for determining nitrogen in both organic and inorganic compounds. Ammonia and ammonium are determined for their
ISO 17034 Accreditation
The ISO 17034 Standard replaced Guide 34 in 2016. It specifies requirements for Certified Reference Material producers (CRM’s). One of these strict requirements is the
ISO/IEC 17025 Accreditation
The ISO 17025 Standard is a requirement for competence of laboratories to perform testing of their products as well as calibration of their equipment. It
Iodine Standardized Solutions
Most of the world’s iodine is mined in Chile’s Atacama Desert, followed by Japan. In Chile it is an ore (caliche ore), but in Japan
Hydrochloric Acid Standardized Solutions
Around the time when Emperor Charlemagne was crowned Emperor in Dark Age Europe (800 AD), hydrochloric acid was discovered by a Persian scientist, Jabir ibn
EDTA Disodium Salt Molarity/Normality Solutions
EDTA is available as different salts – calcium or sodium – and can be used in many different industrial applications, such as medicinal/pharmaceutical, agriculture, cosmetics
Ceric Sulfate Normality Solutions
Cerium rare earth compounds occur as either III or IV valences, and most of cerium is used in glass polishing, among other uses. China is
Ammonium Ionic Standards and Their Uses
The ammonium ion (NH4+) is typically available as an aqueous standard from ammonium chloride, or other reagent with ammonium as a component of a salt.
Acetic Acid, History and Uses
Acetic acid was first distilled by a German Chemist, Georg Stahl in 1700. In its pure form, it is referred to as glacial acetic acid
Ammonium Hydroxide
Ammonium hydroxide (also known as aqua ammonia) is mainly produced by a reaction of ammonia gas with water. The most well-known process that utilizes ammonia
Hematoxylin Harris Stain
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)
Formazin Turbidity Standards
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
Silver Nitrate 0.1N
Silver Nitrate is a non-hydroscopic salt of silver that is soluble in water. It is relatively stable to light compared to sensitive silver fluoroborate and
Iodine Monochloride in Acetic Acid Solution (WIJS)
Iodine monochloride is a reddish-brown interhalogen solution produced by combining iodine and chloride halogens in a 1:1 molar ratio. This can be expressed by the
TDS vs Hardness vs Conductivity
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
Blending elements for ICP, ICP-MS, ICP-OES standards
Blending stock standards for your custom in-house internal standard takes a little time, but it is very economical provided you already have the stock standards
pH Buffer Calibration Verification
Work involving pH Buffer Calibration requires calibration standards that are dependable and accurate. Providing your equipment is maintained well, measuring pH should not be a
Titrating Carbonates with Alternative Indicator
The titration of carbonates (typically sodium carbonate) involves a weak base vs a strong acid (hydrochloric acid 0.1N). Color change results are quite subjective if
Normality Solutions vs Percent Solutions
You have probably noticed that some liquid concentrations are marked as a percentage while others are noted as a normality. They can, in theory, be
Volume-Volume (v/v), Weight-Volume (w/v), and Weight-Weight (w/w) in Percent Solutions
While it may seem like a solution of 10% refers to only one concentration value, percentage could indicate different concentration values depending on the type: