Attached please find a brief description of some new Method 8270 Calibration Standards. We have recently completed new designs that make preparing calibration standards at multiple levels fast, less error prone and economical. Each mix is stable and formulated at concentrations for easy dilution schemes.

Designed to simplify use of second source check standards in your lab. Each of our LCS standard solutions is formulated at ready to use concentrations, analytically validated against NIST SRMs and sterilized for stability. Each tube contains slightly over 10mL of solution, enough for both opening and closing CCV analyses.

Fluoride 2 mg/L

Chloride 3 mg/L

Nitrite 10 mg/L

Bromide 10 mg/L

Nitrate 10 mg/L

Phosphate 15 mg/L

Sulfate 15 mg/L

Part#: IC-7-SNIP 25 x 10mL $62.50

To use, simply open the tube with a sharp pair of scissors. Pour contents into a sample vial and proceed with analysis. That's all there is to it! Available for cations too.

Now available for error free QC spiking for all of your Method 1664 Oil and Grease analyses. Our new 1664 PAR surrogates are packaged in exact volumes in easy to use inert teflon thermosealed teflon tubes. To use, simply snip off the top of the tube and pour the entire contents into your extraction vessel. That's all there is to it. Available at two levels: 0.2% and 0.4%.

Part#: QC-003LSNIP 25 x 10mL Tubes $100.00

0.2% n-hexadecane, 0.2% stearic acid in acetone delivers 40mg total oil & grease per tube.

Part#: QC-003SNIP 25 x 10mL Tubes $100.00

0.4% n-hexadecane, 0.4% stearic acid in acetone delivers 80mg total oil & grease per tube.

Order On-line or Call 1-800-234-7837

SM1020B Sec. 3 of Standard Methods requires daily analysis of external standards along with your normal sample load. If you are doing ultra low residual chlorine analysis(<200ug/L), the daily LCS can be problematic because the analyte source material can be quite unstable when diluted to typical analytical levels. Further, unless packaged hermetically, stock standard solutions tend to degrade pretty rapidly requiring you to then re-standardize or re-purchase the materials more often than you might want.

To address the difficulty in handling standard solutions for ultra low residual chlorine, we have developed single use LCS standards that are packaged in a manner preventing analyte source volatilization while not requiring any pipets to prepare. This new standard, Ultra Low Residual Chlorine Accuracy Check Solution yields an LCS of 100ug/L and is supplied with a certificate of traceability listing true value and acceptance limits.

These new standards are packaged under argon at exactly 1.50mL in 2mL "snap and pour" ampules in packages of 24 ampules. To use the standard, add a small amount of reagent water to a 50mL volumetric flask. Then, take a standard ampule from the refrigerator and quantitatively transfer the contents of the ampule into the flask with 2-3 small rinsings. Because these ampules are the wide neck type, the standard solution should pour easily but a transfer pipet may be used. Once the quantitative transfer is complete, bring the solution to 50mL with reagent water and proceed directly to analysis.

Part# QCI-118 - 24 ampules for $35.00

Our sulfur/nitrogen standards have been specifically designed for petroleum analysis. The standard sulfur source is dibenzothiophene and the standard nitrogen source is pyridine. All listed standards are prepared in "ultra-pure" iso-octane. Our iso-octane is processed in our laboratory by proprietory processes to reduce residual sulfur and nitrogen to low ppb levels. Traceable to NIST test masses. Packaged in 1.5 mL aliquots in wide neck ampules under argon.

Please download the attachment for part numbers, concentrations, package size and pricing information.

Section 1020 B3 of Standard Methods states that an independent LCS must be run on a daily basis. If your lab has to run multiple parameters, managing multiple LCS solutions can be burdensome and costly. In an effort to simplify this compliance to Sec. 1020 B3, we have developed our Universal Wastewater Standard.

A truly unique product developed and manufactured exclusively by NSI Solutions, the Universal Wastewater Standard can be used to QC analyses for 12 conventional pollutants. It can even be used for daily GGA tests.

The Universal Wastewater Standard is certified for the following analytes:

   TOC - 121 mg/L     BOD5 - 198 mg/L             CBOD - 163 mg/L        COD - 292 mg/L     TSS - 100 mg/L          Conductivity - 600 umhos

   pH - 7.20 units      Total Solids - 725 mg/L   p-PO4 - 2.50 mg/L     TDS - 450 mg/L       N-NH3 - 7.50 mg/L      N-NO3 - 3.00 mg/L

* Concentrations may vary nominally due to manufacturing variances.

The demand parameters are derived from 50/50 glucose/glutamic acid at 300 mg/L. Therefore, the standard can be used additionally for the daily GGA by simply diluting 6mL to 300mL directly into your BOD bottles.

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The typical sulfide standard is available from many commmercial sources is preserved in an aqueous, alkaline matrix with a small amount of Zinc Acetate. This conventional approach to preparing sulfide standards produces a solution that is stable for a short time only, and generates a precipitate that requires resuspension each time used.

We have developed a new, very stable sulfide standard. The standard is formulated at 10 mg/mL available sulfide in a proprietary buffer matrix in an oxygen free environment. This formulation requires no Zinc Acetate preservation so no precipitate is formed! Without a precipitate, aliquots can be taken without concern for solution heterogeniety. When stored at 4 degrees Celsius, we are estimating this solution is stable for at least 12 months from manufacturing.

To use this standard, mix gently by inversion then perform an appropriate serial dilution to yield the required standard concentrations. The stock standard is supplied at 10 mg/mL to allow for easy dilution up to 100 mg/L as per SM 4500-S2. This can be used for calibration or as an LCS.

Part#: QCI-147 - $180.00/6 x 1.5mL

Dissolves Fast, Recovers Well and Does Not Require ATCC License Agreement

Our new, E. Coli Positive Control Sample can be used for a number of purposes:

Supplied at 100 CFU per sample with a COA, this E. Coli sample can be used to validate quantitative analysis. Can be used to develop control charts.

Is ideal for use as training tools or to document an analysts competency.

Useful for media validation.

These samples are different than the conventional lyophilized samples. Because they are prepared and stabilized by a proprietary gel lyophilization technology, they dissolve faster and more completely and recover better than the conventional charcoal base lyophilized samples.

Like all of our new wastewater standards, these E. Coli positive controls are really easy-to-use. All you need to do is bring 100 mL of sterile dilution water up to 37oC. Then, aseptically transfer at room temperature the sample to the 37oC sterile water. Allow this to dissolve for 15 minutes or so. The pellet will completely dissolve with no insoluble residue. Mix by inversion and you are ready to roll. The E. Coli is ATCC# 11775 equivalent.

MIC-QC7 - 20 samples/$208.00

MIC-QC7S - 1 sample/$35.00