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Multi-element Standard Solution Lot N: R45552

Ref N.: EE92.4.W.L5

Composition: F

-

2mg/l; Cl- 4mg/l; NO2- 2mg/l; NO3- 4mg/l; SO42- 4mg/l; PO43- 2mg/l;

Matrix: H2O

Element

Certified Value and uncertainty (mg/l)*

F-

1.987 ± 0.006

NaF 99.999%

1/[1] : F-[NaF] : H2O : T- : 5 : H03-02

NIST SRM 3183 Lot N 991510

Cl-

3.995 ± 0.013

KCl 99.999%

1/[1] : Cl-[KCl] : H2O : T- : 5 : H05-02

NIST SRM 3182 Lot N 990506

NO2-

1.996 ± 0.006

NaNO2 99.999%

1/[1] : NO2-[NaNO2] : H2O : T- : 5 : H06-04

CRM 27033 Lot N RTA45

NO3-

4.006 ± 0.013

KNO3 99.999%

1/[1] : NO3-[KNO3] : H2O : T- : 5 : H03-03

NIST SRM 3185 Lot N 991508

SO42-

3.973 ± 0.013

Na2SO4 99.999%

1/[1] : SO42-[Na2SO4] : H2O : T- : 5 : H04-02

NIST SRM 3181 Lot N 000630

PO43-

2.015 ± 0.006

KH2PO4 99.999%

1/[1] : PO43-[KH2PO4] : H2O : T- : 5 : H02-03

NIST SRM 3139a Lot N 890607

Starting Material Purity

LOT Number Starting Solution

Traceability

*the certified value is based on both gravimetric preparation, and instrumental analysis * the uncertainty is calculated as: U=ku c, where k is the multiplier for a 95% level of confidence interval (Table B.1 of Guidelines for Evaluating and Expressing the uncertainty of NIST measurement results), and u c is the combinated standard uncertainty calculated acc. ISO Guide to the Expression of Uncertainty in Measurement

Measured density:

0.997 g/cm 3 at 20 0C

This solution was manufactured using purified acids by subboiling, 18 MOhm double deionized water, calibrated Class A glassware, and high density polyethilene bottle, decontaminated by leaching with high purity acids, 18 megohm deionised water and triple rinse. Balances are calibrated with weights, traceable to NIST. Stability and accuracy are guaranteed until the date shown at the label provided that the solution is tightly capped and stored under normal laboratory conditions.This certification is nullified if the standard solution is damaged, contaminated, or modified. Certification date: Shelf Life* : Expiry date** :

14.07.2009 until 08.2010 ………………(Should not exceed 6 months from date of opening within the shelf-life period.)

* The shelf life is the specified length of time prior to use for which a properly packaged and stored standard solution remains within the specified uncertainty. ** The expiry date is the date after which the certification of standard solution becomes invalid (due to transpiration losses and frequently use).

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ACN CHEMICALS UK Ltd. - Second Floor, 27 Gloucester Place, London, W1U 8HU, United Kingdom Tel: +44 (0) 207 193 9114 - Fax:+44 (0) 208 950 1603 – Email: contact@spectracer.co.uk – Web: www. spectracer.co.uk


UK-Ionic chromatography multi-element certificate of analysis