• Time for Lab ABCs »

• When to Change
Sampler Tubing

• Troubleshooting Peak Problems for Lachat Instruments

• Rugged ORP with
Clean Performance

• Work Smarter,
Not Harder in BOD

• Non-Glass pH Meter that Fits in Your Pocket

• Complimentary Water Clock

• 7,500 Bonus P3 Points

• Water Analysis Handbook with a Spec

• Lachat Instrument
Update Program

• Pour-Thru Cells for Improved Accuracy

• pH Buffers

• Disinfection: What you Need to Know

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Time for Lab ABCs

In the spirit of back to school, a self-check on good laboratory practices may be in order. Ensuring the correct performance of basic techniques in mixing, distillation, filtration, and sample dilution helps save you time in the long run. Hach's Water Analysis Handbook, 5th edition gives a great refresher in its Laboratory Practices Chapter. Access this indispensible guide online for over 1700 pages of step-by-step instructions, required items, and procedures
to simplify the water analysis process.

Technical Tips

When to Change Your Sigma Pump Tubing

Need help remembering when to change your pump tubing? It's easy with Sigma's tubing life indicator.
When 20,000 cycles have expired, you will see "ALARM: CHANGE TUBE" appear on the screen. Press any key to clear

Another Tip: If you can run longer than 20,000 cycles on a piece of pump tubing, just reset your cycle limit. One cycle is considered a pre purge, rinse, sample and post purge.

Troubleshooting Peak Problems for Lachat Instruments

When operating the Lachat Flow Injection Analysis (FIA) system, the peaks displayed in the Omnion software represent your data. A visual key to system performance, these peaks tell you many things — from concentration of the analyte to issues that must be examined. But what do you do when you don't see any peaks, or if the peaks look very odd when running an FIA method?... » Learn more.

What's New

Oxidation Reduction Potential:
Get Clean Performance

Designed for harsh environments, Hach's IntelliCAL™ ORP probe features a super-tough, stainless steel body and polymer shroud that protects the sensor from impact. The probe features a flat disc sensor design for easier polishing and cleaning. Reinforced, steel-sheathed cables make for durable, yet manageable operation. The probe offers waterproof operation for 24 hours at a depth of 30 meters.

Work Smarter, Not Harder with Hach BOD Manager™ Software!

Hach's best-in-class BOD system now has the added benefit of error-proof calculations by leveraging the Hach BOD Manager software package. The Hach BOD Manager software automates data entry and calculations from the Hach HQ40d Meter and LBOD probe, providing improved data integrity and productivity for BOD testing.

When used with the Hach BOD System, you will benefit from assured data integrity, improved productivity and easy access to data.

To receive your COMPLIMENTARY DEMO*, visit: www.hach.com/bodmanager.

* Limited time offer

Non-Glass pH Meter that Fits in Your Pocket

The IQ125 miniLab Professional pH Meter features a waterproof, rugged, non-glass pH sensor with an advanced ISFET silicon chip that provides stable readings in seconds. The meter allows for up to three points of calibration. Also includes a 6-mL dropper bottle of pH 4, 7, and 10 calibration buffers.

Special Offers

Complimentary Water Clock with Web Order

Order over $550 on Hach.com and receive a free Hach water-powered clock. Offer expires October 2nd, 2009 or while supplies last. To get the water clock, simply enter offer code 9E77JA in the offer code box when checking out.

7,500 Bonus P3 Points with Web Order

Order over $550 on Hach.com and receive 7,500 P3 Points. Offer expires October 2nd, 2009. Simply enter offer code E979JA in the offer code box when checking out.

Hach Expertise at Your Fingertips:
Get a WAH with Your Spectrophotometer

Buy a DR 5000™ UV-Vis or DR 3800™ Spectrophotometer and receive a complimentary hard copy of Hach's Water Analysis Handbook ($95.00 value) complete with illustrated, step-by-step instructions and comprehensive water analysis procedures. Mention offer code 9M50AS (DR 5000) or 9M38AS (DR 3800) when ordering.

2009 Lachat Instrument Update Program

The unprecedented economic situation has had a major impact on analytical laboratories worldwide. Many labs have seen cutbacks in their capital equipment budget, delaying the upgrade of their outdated analytical instrumentation. In order to help labs through these difficult times, Lachat Instruments is introducing a new 2009 Lachat Instrument Update Program.

Time Savers

Pour-Thru Cells™ Improve Accuracy and Measurement
for Rapid Liquid Methods

If you have a spectrophotometer, consider an optional Pour-Thru Cell that improves accuracy, particularly for low ranges, and makes measuring more convenient for rapid liquid methods. Methods that use 25-mL samples and sample cells can use the Pour-Thru Cell if specified in the procedure. Check whether a cell can be used directly with your method, by checking the procedure specifications in Hach's Water Analysis Handbook.

Get the Right pH Answer the First Time

Genuine Hach pH standard buffers are formulated to strict NIST guidelines with pH temperature profiles well-characterized and fully documented. Non-NIST pH standard buffer values can vary unpredictably with temperature, introducing an unknown calibration/test factor that can compromise consistency of results. Visit our pH Buffer Product Guide for additional details.

Control and Monitor Your Disinfection Process
with Help from Hach

Bookmark this online article series written by Hach's team of application experts for your quick reference. Articles include: