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Analytical Standards

4YOURLAB offers over 1000 different standardised solutions, titrants and buffers for use with standard methodologies.
 


 

  1. All products are prepared with chemical substances, meeting or exceeding reagent

  2. grade Ph Eur specifications
     

  3. Balances are routinely calibrated using NIST tracable reference weights
     

  4. Aqueous based solutions are prepared using High Purity Water
     

  5. All containers are inertness - tested, washed, preleached and triple rinsed in high

  6.  purity water
     

  7. Formulations are standardised directly against NIST-SRMs when available. When

  8.  the appropriate NIST-SRM is not available, standardization is performed against the

  9.  highest purity primary standard available
     

  10. Certficate of Analysis is included with each standard
     

  11. Our ISO 9001:2000 certified quality system ensures a reliable analytical product

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONDUCTIVITY STANDARD SOLUTIONS

 

Certified reagent-grade solutions can be traced to standards provided by NIST.
 

Accuracy is +/- 1%.
 

Supplied in a 500ml or 1000ml HDPE bottle
 

with certificate.

 

COLOUR CODED pH-BUFFER SOLUTIONS
 


 

These pH buffers are colour coded for simplicity, and each lot is tracable to NIST Standards to ensure accuracy.
 

Accuracy is +/-0.012 pH.
 

Each pH buffer includes a certificate.

 

REFERENCE pH-BUFFER SOLUTIONS
 


 

Buffer solutions are prepared with carefully weighed chemicals of the highest grade following International Laboratory
 

Practices guidelines. Each bottle comes with a certificate of analysis, prepared by comparison
 

with NIST standards.  Accuracy is +/- 0.003 pH

 

STANDARDS OF ETHANOL
 

IN WATER
 


 

These standards are intended for use as reference solutions for alcohol content measuring instruments.
 


 

They are prepared using organic-free water, and the certified concentrations are based on results obtained from the gravimetric preparation of each solution and from the analytical results determined using gas chromatography and titrimetry.
 

Accuracy is +/- 0.02%

 

READY-TO-USE ANALYTICAL VOLUMETRIC SOLUTIONS
 


 

Titration is the oldest but still the most precise procedure in chemical analysis. However, such reliable analysis require accurately adjusted volumetric solutions.
 

The Certificate of Analysis comes with actual concentration, lot number, expiry date, stability and traceability to NIST, where applicable.
 

Titer precision at 20C - T= 1 +/- 0.1%.

 

CONCENTRATED VOLUMETRIC SOLUTIONS
 


 

Volumetric concentrates offer the convenience of prepared volumetric solutions with the benefits of reduced shipping costs
 

and storage space.
 

Concentrates are designed to be quantitatively transferred and brought to volume.
 

Concentrated volumetric solutions come in sealed bottles with exact volume.
 

Certificate of Analysis mentions the actual concentration, lot number, expiry date, stability and traceability to NIST, where applicable.
 


 

Easy to use.
 

No ampoules to break.
 

No need for pipetting: Empty the bottle in a volumetric flask, rinse and complete to volume.
 

Titer precision at 20C - T= 1 +/- 0.2%.