Who Dat Back In NOLA? Sper Scientific Dats Who!

The American Water Works Association hosts its annual Water Quality Technology Conference (WQTC) and Exposition Convention and Exposition in New Orleans November 16-20, 2014.  This established and highly regarded conference provides a practical forum for a wide range of water professionals to exchange the latest research and information. The Opening Session will highlight the 40th anniversary of the Safe Water Drinking Act featuring Peter Grevatt, Chief of USEPA’s Office of Ground Water and Drinking Water, and David LaFrance, AWWA CEO in a discussion on AWWA’s Total Water Solutions™.

2014 will mark the second time that Sper Scientific (Booth 700) will exhibit at WQTC.  Sper Scientific’s focus at the event is to help water professionals optimize their processes and to demonstrate its lineup of innovative water quality products.

Sper Scientific delivers dependable, accurate water quality measurement devices to monitor the changes in water over time from seasonal variations, weather, as well as, man-made pollution. Whether you are in agriculture, aquaculture, industry, education, power generation, or municipal waste water, Sper Scientific offers a complete line of water quality meters, to test the acidity, alkalinity, conductivity, dissolved oxygen (DO), Oxygen Reduction Potential (ORP), of your water.

How Safe Is Your Sushi Rice?

We learned from one of our customers that sushi rice has the potential to become a host for pathogens if not properly prepared. To protect against this, it is imperative that proper amounts of vinegar are added to maintain optimum acidity.

To ensure proper acidity levels are achieved, a pH meter should be used to test each batch of rice. A maximum pH reading of under 4.6 is generally considered safe.  In many states, there are specific laws in place that state sushi rice pH MUST be between 4.1-4.6. 

There are two different ways that you can measure the pH of sushi rice.  Method one is to use a pH meter with a probe for measuring non-liquid items such as rice. We used the Sper Scientific Basic pH Meter (840087) in our experiment and a Spear Tipped pH probe (840049), which is designed especially for measuring non-liquid items.  We also used Sper Scientific Large Display pH Pen (850050) and compared the methods.

The meter and probe is by far the easier of two methods in that you can simply insert the spear tipped probe into rice and get your reading.  In order to use the pH pen you have to make a slurry (instructions below) in order to take your readings.  When using the slurry method you need to ensure there is enough moisture in the rice for the electrode to be fully saturated. In either case, you should conduct a pH test within 30 minutes after acidification of cooked rice to accurately test your sushi rice.

To make a rice slurry you start by gathering a ¼ cup sample of cooked, acidified rice taken from various locations in the batch and add ¾ cup of distilled water in a clear cup. Blend the slurry for 20 seconds to create a thorough mix. Once you have created your slurry mix you insert the pH pen in the mixture and let it rest for few seconds before you take your reading.

In both cases, you should calibrate your meter and probe with both a pH4 and pH7 calibration solution prior to taking your readings to ensure the accuracy of your readings. 

Sper Scientific offers several pH meters and pH pens that can be used to test the pH of your sushi rice.  The pH meters can be purchased for as little at $77 and the spear tipped probe costs $83.  The pH pens start at $37.  Below are links to a few of our meters, pens, and to the Spear Tipper probe.


840087– Basic pH Meter

850055– Advanced pH Meter

850057K– AquaShock (Water and shock proof) pH meter

840049– Spear Tipped Probe

850050– Large Display pH Pen

850051– Large Display ATC (Automatic Temperature Compensation) pH Pen

What Are The Key Components and Ways To Save Our Waterways And Fisheries?

Water conservation is a frequently discussed topic in terms of household use, government regulations, and agriculture and water management. As the global population increases, it is becoming more critical to manage water resources and the ecosystems that rely on them. An article found on the Science Daily discusses the components of a successful freshwater management plan and nine ways to save our waterways and fisheries.

“Humans have put key freshwater ecosystems at risk because of land development and the loss of the vegetation along rivers and streams.” says John Richardson, a professor in the Dept. of Forest and Conservation Sciences at the University of British Columbia.  Richardson is one of 15 freshwater biologists who created the framework to help protect fish and ecosystems into the future.

According to Richardson, “Humans also depend on these ecosystems for basic resources like clean drinking water and food as well as economic activity from the natural resource sector, tourism and more.”

Richardson and his colleagues created a framework of evidence-based principles that managers, policy makers and others could easily use in their work.

Richardson states the components of a successful freshwater management plan should include:

  • Protect and restore habitats for fisheries
  • Protect biodiversity as it enhances resilience and productivity
  • Identify threats to ecosystem productivity
  • Identify all contributions made by aquatic ecosystems
  • Implement ecosystem based-management of natural resources while acknowledging the impact of humans
  • Adopt a precautionary approach to management as we face uncertainty
  • Embrace adaptive management — environments continue to change so research needs to be ongoing for scientific evidence-based decision making
  • Define metrics that will indicate whether management plans are successful or failing
  • Engage and consult with stakeholders
  • Ensure that decision-makers have the capacity, legislation and authority to implement policies and management plans.

What are the 9 guiding principles as defined by Richardson and his colleagues?

  • Acknowledge the physical and chemical limits of an ecosystem
  • Population dynamics are at work and there needs to be a minimum number of fish for the population to survive
  • Habitat quantity and quality are needed for fish productivity
  • Connecting habitats is essential for movement of fish and their resources
  • The success of freshwater species is influenced by the watershed
  • Biodiversity enhances ecosystem resilience and productivity
  • Global climate change affects local populations of fish
  • Human impacts to the habitat affect future generations of fish
  • Evolution is important to species survival

According to Richardson, “healthy freshwater ecosystems are shrinking and reports suggest that the animals that depend on them are becoming endangered or extinct at higher rates than marine or terrestrial species.”

What are your thoughts on how we can save our waterways?

Sper Scientific Offers NIST Traceable Instrument Certification At Its Headquarters In Scottsdale, Arizona.

At Sper Scientific, we certify two categories of instruments: 

  • Newly purchased instruments are certified prior to shipment, which may extend your order ship day by up to 10 business days. Not all instruments can be certified, when certification is possible an ordering option will appear on the product page.
  • Previously purchased instruments are returned annually to Sper Scientific for certification, and may take up to 10 business days to certify.

Purpose of the Program:
There is an increasing requirement by customers for documentation supporting manufacturer’s claims of accuracy on their scientific equipment. This is partially due to the increasing acceptance of quality standards, such as ISO 9000* and GMP**, which require that periodic certification of test equipment be performed and documented.  Most testing is done in-house with our own state-of-the-art equipment. Whenever possible and practical, we use N.I.S.T. traceable equipment and N.I.S.T. procedures.

* ISO 9002 1987 (E) Section 4.10
** FDA Good Manufacturing Practices Section 820.61

Each certified product comes with:
• A serial number
• A calibration or certification label
• One of three certificates.*

For a complete list of certified products please go to www.sperdirect.com

Water Quality Meter Consolidates Multi-Parameter Water Testing into a Single Device

The Sper Scientific Water Quality Meter Model 850081 uses interchangeable probes to read pH, mV, conductivity, TDS, DO, temperature and ORP, diminishing the need for multiple devices dedicated to testing limited parameters. The user can order probes for only the parameters currently required, and add additional probes in the future. Intelligent probes electronically retain calibration information. No recalibration is required when changing probes.

The display simultaneously reads temperature in user selectable °C & °F, and all measurements are automatically temperature compensated. RS232 port enables communication with a computer. Also features auto power off, hold, min/max, fold-out easel back and a tripod screw. Comes with 9V battery and a hard-shell, foam-lined carrying case with room for one or two probes.

The Sper Scientific Water Quality Meter is ideal for field or plant use in a municipal drinking water or waste-water setting, and is available direct from the manufacturer at SperDirect.com 

Noise Measurement with Maximum Versatility

The Sper Scientific Advanced Datalogging Sound Meter (Model 850013) uses a single range of 30 ~ 130 dB.  This dynamic range eliminates the need to manually select and change ranges, alleviating the problem of lost data associated with range changes in auto-ranging models.

All test parameters are simultaneously displayed on a large, bright backlit display featuring 0.1 dB resolution and a bar graph.  Automatically log up to 31,000 records for later download, or manually save and recall 99 data points with date and time stamp directly on the meter’s LCD. The bi-directional USB port and software enable control of the meter via its on-screen image, and the optional microphone extension enables up-close measurements of hard-to-reach areas.

Accurate within ±1.4 dB and meets or exceeds all other specs for an ANSI S1.4 and IEC 61672-1 Type 2 meter. Also features A/C and fast/slow weighting scales, min-max, over/under alarms, AC or DC recorder output and auto power off. Calibrate in compliance with OSHA using Acoustical Calibrator.

The Sper Scientific Advanced Datalogging Sound Meter is available directly from the manufacturer at SperDirect.com.

Sper Scientific Min-Max Thermometers Offer Accurate and Affordable Temperature Monitoring

Used for greenhouse temperature monitoring, the Sper Scientific Min-Max Thermometer is available in two models. Model 736680 includes a magnetic float reset and features dual scales of -50/50°C & -60/120°F. Model 736690 features a push-button reset and dual scales of -50/50°C & -60/120°F.

Sper Scientific Min-Max Thermometers allow easy spot checking of temperature in a greenhouse or other temperature-sensitive environment.  Sper Scientific Min-Max Thermometers are available at SperDirect.com.