Environmental Monitoring of Surface and Groundwater using Rhodamine Dye

As we prepare to showcase our metering pumps at Analytica, we wanted to share a common problem our pumps have solved.

Analytical sciences is an exact “quantitative” science which most often relies on precision fluid control of both samples and reagents to obtain the most accurate analysis.  One application where Fluid Metering’s valveless metering pumps have been very successful is in groundwater studies using rhodamine dye as a tracer chemical.  Though dosing and sampling procedures and data analysis methods vary with application, in general, the standard procedure in dye fluorometry hydrologic studies is to introduce a quantity of dye into a water body, and subsequently collect water samples over some spatial and temporal regime. These samples are then analyzed with a fluorometer for the concentration of the dye that is proportional to its fluorescence.

Dyes mimic the movement of water molecules. A measure of the movement of a dye (i.e., Rhodamine WT) will in effect be a measure of the movement of the water and, therefore, substances transported by the water in which it is introduced. Dispersion and mixing occur in all dimensions of the water body (Wilson, et. al. 1986). For example, in streams vertical mixing typically occurs first. Subsequently, and depending on current, channel configuration and stream characteristics, lateral mixing and longitudinal mixing follow. These phenomena are the subjects of interest to investigators employing dye fluorometry. For other bodies the sequence of mixing phenomena may vary, but the principle holds true nevertheless.

Fluid Metering’s QBG Low Current Metering Pumps are ideal for precision injection of rhodamine dye for surface, stream, and groundwater flow studies.  The three main reasons Fluid Metering’s QBG pumps are ideal for this application are as follows:

  1. Accuracy – As with any quantitative study, the results are only as accurate as the procedure and apparatus used.  FMI’s valveless design features only one moving part in fluid path, a sapphire-hard ceramic piston. This, as well as elimination of check valves from the pump design result in a metering pump having long term precision of 0.5%.
  2. Inert Internal Components – Using chemically inert ceramics and fluorocarbon wetted parts ensures that the pump will not skew results due to contamination contributed by the pump.
  3. Low Current Operation – The QBG consumes only 60 mA of power at 12VDC. Since, environmental studies are typically in remote locations, devices that run at low current will operate for extended periods of time on battery power.

At Fluid Metering we’re all about solving problems. With over 55 years of experience in providing dispensing and metering solutions we have worked with a variety of applications across several industries. Our metering pumps are also ideal for applications such as detecting chemical and physical properties of a substance such as blood chemistry instrumentation in the medical field as well as non-medical instrumentation for liquid and gas chromatography systems, pH monitors, and more.

To see how we can help you with your application be sure to visit us this week at Analytica in Munich, Germany. The trade show runs from April 1-4, 2014 and we’ll be located at Hall B2 Booth 338 showcasing our solutions for the pharmaceutical, chemical, food, plastics, and OEM industries.

Posted in Metering Pumps, Valveless Metering Pumps | Tagged , , , , | Leave a comment

Meet Fluid Metering at Interphex ‘14

For the pharmaceutical industry, Interphex is one of the largest trade shows to attend, bringing in over 12,000 industry professionals to the Javits Center in New York City. The tradeshow will feature over 650 vendors featuring the latest in pharmaceutical and biopharmaceutical manufacturing technology as well as educational sessions produced by PDA (Parenteral Drug Association) as well as view interactive demonstrations, case studies, and network with exhibitors and other attendees. And this year, as with every year we’re excited to be showcasing our products at the show.

Attendees can find us at booth 1459 in the sourcing and services section of the all from March 18-20th. We’ll be showcasing our PDS-100 Programmable Dispensing System, ideal for the pharmaceutical industry. The system features our patented CeramPump valveless fluid technology and is available in single and dual pump head configurations. It is capable of dispensing or pumping fluids ranging from 2.5 uL per dispense or 8 uL/min continuous and up to 1536 mL/min into pressures ranging from 10 psi to 100 psi.

PDS100 Programmable Dispensing System Features

Be sure to follow us on Twitter for information about Interphex and visit our website to see all the trade shows we’ll be attending this year. To learn more about our metering pumps, including the PDS-100 use our live chat feature to speak with an application specialist.

Posted in Metering Pumps, Valveless Metering Pumps | Tagged , , , | Leave a comment

What Are the Advantages of Using a Ceramic, Valveless Metering Pump?

The valveless CeramPump® technology was first patented by Fluid Metering over 55 years ago. Fluid Metering’s pumps, have only one moving part to accomplish both the pumping and valving functions, thereby eliminating the check valves that are present in all other reciprocating (syringe pumps, diaphragm pumps, bellows, piston) designs.

FMI Valveless Metering Pump uses a unique rotating and reciprocating ceramic piston, moving within a precision mated ceramic liner to accurately pump fluid in one direction without allowing any backflow. The reciprocation action of the piston is similar to a standard piston pump. As the piston moves back, it draws fluid into the pump chamber. As it moves forward, fluid is pushed out of the pump. The simultaneous rotation alternately aligns a flat of the end of the piston with inlet and outlet ports, effectively functioning as a valve. An animation of continuous metering using the CeramPump® principle can be found on Fluid Metering’s Web site at http://www.fluidmetering.com/how-it-works.html.

Valveless Metering Pump

There are a variety of key advantages that come with using FMI’s patented CeramPump® valveless piston pumping technology:

  • Valveless Design The valveless feature of the CeramPump® design is its most significant feature. There are typically four check valves present in diaphragm, bellows, and traditional piston pumps. Even during normal operation, these will wear over time and not seal properly allowing backflow. As a result, accuracy drifts and minimally the pumps need recalibration. Eventually, the check valves need to be serviced.
  • Ceramic Internals The CeramPump® uses sapphire-hard ceramics for both the piston and mated liner. These components are dimensionally stable in that they will not change shape or dimension over time. Therefore, the pumping chamber remains stable for millions of dispenses without downtime or recalibration. In addition to dimensionally stable they are chemically inert which allows our pump to work in a greater variety of chemicals.
  • Accuracy & Precision Throughout the pumping cycle the inlet and outlet ports of the FMI Valveless Metering Pump are never interconnect ensuring accurate fluid flow in one direction preventing any backflow (without check valves). As a result FMI pumps accuracy is held from microliters to the full flow range and output does not change more than ± 1% of set value. Inaccurate pumps can generate waste and incur extra costs. Check our Pay back Calculator to see how long it will take for a FMI pump to pay for itself.

Additional advantages that come with using a Valveless Ceramic Metering Pump for FMI can be found at http://fluidmetering.com/features-benefits.html.

For more information, Call toll free 1-800-223-3388 or 1-516-922-6050, or use our “Live Help”, for a direct connection to Fluid Metering’s application experts.

Posted in Valveless Metering Pumps | Tagged , , | Leave a comment

5 Things to Know to Select the Perfect Metering Pump

Metering pumps are used in almost every segment of an industry to meter, inject, transfer, dispense, sample, or proportion fluids. Metering pumps and dispensers are used in a variety of applications, including chemical process industries (CPI), laboratory, OEM analytical instrumentation, and automated medical diagnostic equipment.

With such an array of applications it can be difficult for customers to know which pump is best for their industry. These important considerations can help you get started on selecting the perfect pump.

1) Flow Rate or Dispense Volume – The first parameter to consider when selecting a metering pump is the required pump capacity. Looking at a manufacturer’s flow capabilities will immediately narrow the choices of the metering pumps that meet the flow criteria.

When considering options for metering pump selection, in most cases, you would want to select the metering pump which has a capacity closest to the maximum flow rate required for the application. This generally will provide a pump that will have the highest accuracy for that application.

2) Fluid Characteristics – Assuming you now have several metering pump options that meet your flow rate requirements, it is important to examine the physical and chemical characteristics of the specific fluid being pumped.

Physical characteristics include viscosity, density, suspended solids, aeration, lubricity, etc. The physical properties directly relate to how the fluid moves through the pump or what is considered fluid dynamics and affects the mechanical operation of the pump. In general, the higher the viscosity, the more drive torque is required. The pump inlet and outlet orifices, as well as the connected plumbing would need to increase as well. Pumping slurries require similar requirements as viscous fluids, but additionally slurries can cause mechanical abrasion to internal pump components.

Chemical properties typically considered deal with corrosion effects of the fluid on the wetted parts of the pump. Strong acids & bases, as well as fluids with solvent properties require wetted parts that have chemical resistance to the specific corrosive fluid. Published corrosion resistance charts should be referenced to ensure compatibility between the fluid type and the wetted pump parts. Additional information required when referencing corrosion resistance charts is the fluid concentration (pH and/or percentage) and fluid temperature. If possible, referring to MSDS Data Sheets or contacting the fluid manufacturer can also help with selecting the best pump material.

3) Pressure – When considering pressure, it’s important to know both the differential pressure (difference between the inlet and outlet), as well as the overall system pressure. Not only does the pump need to have the ability to pump against the outlet pressure, but also be rated to withstand the overall system pressure plus a margin for safety.

4) Temperature – Fluid temperature is an important factor in determining pump compatibility. As mentioned above, fluid temperature can affect the corrosive chemical properties. But, additionally, fluid temperature will affect the mechanical components and integrity of the pump. This is especially true of pumps that use elastomers and fluorocarbons (PVDF, Teflon®) which lose structural integrity as temperatures increase.

5) Accuracy and Precision – Inaccurate pumps can generate waste and incur extra costs. Fluid Metering pumps accuracy is held from microliters to the full flow range and output does not change more than ± 1% of set value. Check our Pay back Calculator to see how long it will take for a Fluid Meter pump to pay for itself.

In addition to these 5 essential steps it is also very important to review special application requirements when selecting the correct metering pump for your application. Some of these include:

  • Sanitary Design which may require special agency approvals (FDA, 3A, etc.)
  • Intrinsically Safe or Explosion Proof for use in hazardous areas
  • Water resistant, water proof, or submersible usually NEMA rated
  • Ambient Temperature – Will the pump and/or control electronics be exposed to extreme cold temperatures in an outdoor environment or extreme heat in a factory setting? This is more of environmental or ambient temperature requirement rather than the temperature of the process fluid

After over 55 years of providing dispensing and metering solutions, FMI has archived hundreds of applications in our comprehensive searchable database. We can search by fluid, application specs, industry, etc. and most likely be able to tell you when, how, and what pump was used to do it before. FMI metering pumps and dispensers have been used for industrial automation, medical instrumentation, laboratory R&D, chemical process, pharmaceutical packaging, mining, alternative energy, water treatment, environmental monitoring, food processing, and much more.

For assistance with a specific application or for custom design support, use our “Live Help” at http://fluidmetering.com/livehelp.html, for a direct connection to Fluid Metering’s application experts, or use our secure Application Request Form to provide us with details of your project. One of our specialists will contact you to target a solution.

Posted in Metering Pumps | Tagged , , , | Leave a comment

Meet FMI at this Year’s CHEM Show!

For companies involved in the process industries, including chemical, pharmaceutical, and food processing, the biennial CHEM Show is an opportunity to showcase new products and learn about new technologies in the field. This year, Fluid Metering Inc. is excited to be a part of it.

Metering pumpsOn December 10-12th, New York City’s Javits Center will be host to the 2013 CHEM Show featuring the latest equipment and technology from over 300 exhibitors. In addition to the exhibits, there will be over 50 focused seminars and new product presentations.

As a leader in precision fluid control technology, we will be exhibiting a variety of their valveless metering pumps and dispensers via an eye-catching interactive display. In addition, Herb Werner, our 19-year veteran Marketing Manager for FMI, will be presenting our unique pumping technology as well as FMI’s new PDS-100 Programmable Dispensing System at the CHEM Show’s “New Technology Theater.” The presentation is scheduled for Wednesday, December 11th at 3:30pm in the New Technology Theater located within the CHEM Show Exhibit Hall.Herb Werner

This year, the CHEM Show expects to attract record international attendance as it follows the week of the annual Christmas Tree Lighting at Rockefeller Center, a worldwide symbol of the holidays in New York City. For more information about CHEM Show exhibits, seminar schedules, and registering for a visitor’s pass, visit the CHEM Show website.

FMI’s booth at the show is #723 and will be staffed with application specialists who can provide fluid control solutions for visitor applications. We hope to see you there!

Posted in Valveless Metering Pumps | Tagged , , , , , , | Leave a comment

‘Get Into the Flow’ and Help Protect Our Environment

Water pollution is a global issue. Here in the U.S., the Clean Water Act was passed more than 40 years ago – in 1972 – after many years of unmonitored pollution finding its way into our nation’s waterways. According to a timeline on PBS.org, “Passed in 1972, the Clean Water Act was a response to the nearly unchecked dumping of pollution into our waterways. At the time, two-thirds of the country’s lakes, rivers and coastal waters had become unsafe for fishing or swimming.”

Today, conditions have improved, but water supplies are routinely monitored, thanks to the Clean Water Act. The PBS timeline also states, “The goal of the Clean Water Act was to reduce pollution in all U.S. waters to restore and maintain the chemical, physical, and biological integrity of our nation’s waters.” Specifically, the law mandated “zero discharge of pollutants into navigable waters by 1985, and fishable and swimmable waters by 1983.”

While times have changed and water conditions have improved overall, the world’s drinking water supply still remains at risk today. Contaminated water threatens quality of life on a global scale. On its website, the Natural Resources Defense Council (NRDC) says, “Many of our water resources also lack basic protections, making them vulnerable to pollution from factory farms, industrial plants, and activities like fracking.” That’s where the measurement of water flow patterns can play a significant role.

Dye fluorometry – or water tracing – is used for tracing pollutants in our water sources, according to this article. Fluorescent dye, such as rhodamine, can measure the time of travel (TOT) for surface and ground water. The dye mimics the movement of water molecules. It indicates how water moves – which ultimately can reveal the source of contaminants and pollutants.

For the best results in water tracing studies, metering pumps should be used for precision injection of the rhodamine dye. Low current metering pumps, such as Fluid Metering’s QBG pumps, are ideal for this application because they offer:

  • Accuracy and precision – the pumps’ valveless design features only one moving part in the fluid path.
  • Inert internal components – chemically inert ceramics and fluorocarbon wetted parts will not skew results.
  • Low current operation – the QBG pump runs at low current and will operate on battery power for extended periods of time, making it perfect for environmental studies in remote locations.

Through water tracing efforts and the measurement of water flow, we can monitor our waterways. Our future – and the future of our grandchildren – depends on the protection and sustainability of the world’s water supply, and the protection of our environment, in general.

Posted in Environmental Protection Pumps, Valveless Metering Pumps | Tagged , , , , , , | Leave a comment

Valveless Metering Pumps for your Blood Work

In the medical and healthcare professions, it’s not uncommon for patients to provide blood samples for medical diagnosis. Typically, the patient goes to a doctor or health facility, gives some blood, and then is off without fully understanding what happens next with the sample. Even some of the healthcare professionals may not know each step that is taken in order to complete the testing of the samples. How is this possible?

Typically, a blood sample is taken and inserted into a machine that can separate it and add a number of reagents in order to test the blood for various conditions. Depending on the machine used, there are pumps within the machine that work behind the scenes in order to accurately dispense and meter the blood and reagents. While syringe pumps have been widely used in clinical instrumentation and blood analyzers, they are not the only pump technology out there; this is where our pumps step in. The valveless metering technology we have created can work more accurately behind the scenes to provide tests that are more on target. With our technology, smaller volumes of blood can be taken with a higher number of reagents added. Our pump technology allows for the blood analyzers to perform more tests with less blood samples.

Clinical instrumentation and medical equipment are all designed with many different parts in mind in order for them to perform their functions as efficiently and accurately as possible. We understand the importance of precise blood testing, which is why we created pumps that execute their roles in the highest way possible.

Posted in Valveless Metering Pumps | Tagged , , , , | Leave a comment