Category Archives: pickering

aflatoxin, Amino Acid Analysis, clean-up, GPC, histamine, mycotoxin, ochratoxin, pickering

New Product Lines from Pickering, October 2009

New Product Lines from Pickering

Mycotoxin product lineMycotoxin product line (PDF)
We are now distributing Mycotoxin Immunoaffinity products for Ochratoxin and Aflatoxin. The performance and batch-to-batch reproducibility of the columns is exceptional and far exceeds that of other manufacturers. The columns can be used for any matrix, from wine and juice, to nuts and grains, to herbs and spices. Contact Sales for more information.
GPC Sample Clean up line
GPC Sample Clean Up Line Products Page
We have a new GPC Sample Clean-up product line! We have both automated and manual GPC cleanup systems and we also have systems that include concentration & solvent exchange, or just GPC. Sample cleanup using GPC is especially useful for fatty matrices, but also perfect for vegetable matter and spices, as well as soil & waste water.

New faster AAA columns Products Page
We now have a Lithium amino acid run which will separate 45 amino acids in 70 minutes for Physiologic fluids, an a new 30-min Sodium amino acid run which will separate the 20 amino acids commonly found in protein hydrolysate samples. These columns are for use with our Pinnacle PCX.
New faster AAA columns

 
Histamine Product Line
Our newly launched Histamine product line consists of Dip-sticks and Elisa kits as well as Post-column derivatization for fast and in-situ testing as well as quick, reproducible, and sensitive methods for follow-up confirmation. Contact Pickering Laboratories at 1-800-654-3330 or sales@pickeringlabs.com for more information!
5200, identifier, lookup, parts, pickering, pinnacle, vector

Ask Technical Support! October 2009

By David Mazawa, Technical Support Chemist

Parts Lookup for Pickering Instruments Now on the Internet:

Looking for a part number? Try out our new Parts Lookup for the Pinnacle, Vector, and 5200 models. It can be found on our website http://www.pickeringlabs.com/

Click on “Service and Support” tab and then choose the Parts Lookup from the pull-down menu. Just choose the model of your instrument, then click on the parts of interest and the part number will be displayed.

You can also use the following link: http://www.pickeringlabs.com/partslookup/default.asp

Make sure your web browser can support Flash applications before selecting your instrument. Place your mouse over the part you are looking for and the part number will be displayed. The Parts Lookup was designed to provide part numbers of commonly replaced parts. If what you are looking for is not available on the Parts Lookup, call Technical Support at (800) 654-3330 or (650) 694-6700 or email support@pickeringlabs.com.
clean-up, Michael Pickering, pickering, soap

Soap Opera

by Michael Pickering

In the process of washing laundry the cleaning agent is the water, the “universal solvent.” The surfactant (soap/detergent) facilitates the removal of strongly adsorbed and hydrophobic soil from the clothes. Foam, however, is a contaminant. Suds stabilizers added to the surfactant create persistent foam. Unfortunately, most consumers believe foaming to be evidence of a good surfactant; that it is desirable. The truth is quite the opposite. Foam residues are difficult to remove. Notice, after all, that the foam is excluded from the solution/emulsion phase: it floats. Thus the rinse cycle is inadequate to the task of removing it. It is the residue of these suds stabilizers on laundered swim suits that necessitate the frequent exchanging of spa water. Contaminated hot tubs, when set to the ‘jets’ cycle, quickly build up foam on the surface of the water. The foam becomes thicker and more persistent with each subsequent use. Eliminating the use of swim suits, or rinsing the suits with water alone, will greatly increase the life of your spa water.

Foam residues on top of water

pickering, survey

Community Corner, October 2009

Community Corner, October 2009

This section is devoted to our customers: for sharing customer experiences and feedback, up-coming changes in products, upcoming surveys, etc. This is also our Chromatography Quiz section, where each issue will contain a new chromatogram and a question associated with it. Each winner will receive a prize, and will be listed in the next issue.
We encourage all of our customers to submit stories, feedback, experiences, and we’ll pick one or two to share with the community.

Upcoming Events

Customer Satisfaction Survey – keep an eye out for a survey coming by email in late November. It will be a short questionnaire designed to gauge our customer satisfaction and how we can improve.

Chromatography Quiz
Chromatography Quiz No. 1: Carbamate Analysis for US EPA 531.1

Special Note: This is the first Quiz included with our newsletter. For each issue, we’ll choose a chromatogram from a different application or industry. So if Carbamates don’t apply to your lab this round, stay tuned! The quizzes and newsletter will be published Quarterly

To Win:

Simply email your answer and your full contact information by December 1st to: Rebecca at Send email to Rebecca Smith

The troubleshooting answer and winner congratulations will be published in the next issue.

Identify the error made when running the Carbamate chromatogram below and win a prize!

Pickering Standard: 1700-0063 Carbamate Test Mix, 2.5 µg/mL, inject 10 µL

Pickering Column: 1846150 Carbamate Column, C18, 4.6 x 150 mm

Normal Operating Conditions (for reference only, condition changes may be reflected in chromatogram):

Column Temperature: 42 °CFlow rate: 1 mL/min
Eluent Gradient:

TIME…….WATER……MeOH %
0……………..85………….15
0.5…………..85………….15
28.5…………30………….70
28.6…………..0………….100
33.5…………..0………….100
33.6………….85…………15
41……………..85…………15

Post-column conditions for pesticide analysis:
Reagent 1: Hydrolysis reagent CB130
Reagent 2: 100 mg of OPA, 2 g Thiofluor™ in 950 mL of CB910
Reactor 1: 100 °C, 0.5 mL
Reactor 2: ambient. 0.1 mL
Reagent flow rates: 0.3 mL/minDetection: Fluorometer ex 330 nm, em 465 nm

Post-column conditions for pesticide analysis