TruFlo Sample Monitor

With the digital display of the TruFlo Sample Monitor, you always know the actual rate of sample uptake to your nebulizer. This enhances the day-to-day reproducibility of your results and reduces the need to repeat measurements due to a blocked nebulizer, worn pump tubing, or incorrect clamping of the pump tube.

Order TruFlo Sample Monitor 

TruFlo
Introduction TruFlo Sample Monitor Features Ordering Information TruFlo Specifications QA Kit Related Documents Customer Comments

Introduction

Do you ever need to repeat the analysis of a sample due to:

  • A blocked nebulizer?
  • Worn peristaltic tubing?
  • Incorrect pressure of the pump tubing clamp?

The TruFlo is also ideal if you are relying on the natural aspiration of the nebulizer. Many operators, particularly of ICP-MS, use natural aspiration in order to eliminate the effect of peristaltic pump noise from their measurements. With the TruFlo, you always know what your sample uptake is and you can take immediate corrective action if there is any change. You can also record your sample flow so that you can check that you are using the same flow from day to day.

Benefits of the TruFlo Sample Monitor
  • Continuous real-time flow measurement
  • Eliminates guess work
  • Sounds an out-of-range alarm
  • Reduces sample repeats
  • Ideal for sample introduction by peristaltic pump or natural aspiration
  • Suitable for all ICP-OES and ICP-MS models
PRODUCT FEATURES

TruFlo Sample Monitor Features

Continuous real-time flow measurement

tf1

The actual sample flow is shown on the TruFlo's inbuilt digital display and a graph of the flow versus time can also be displayed on your computer.

tf2
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You can set the upper and lower limits of your acceptable sample flow range.

tf3

You can receive a warning on the screen, as well as an audible alarm if the sample flow moves outside the acceptable range. This can happen if the flow is restricted due to a blockage or a leak. It can also occur when the pump tubing wears out. Pump tubes are often replaced either too early or too late.

tf4

You always know the actual sample flow and you do not need to worry about converting pump revolutions to sample flow. The real-time flow display enables you to optimize the pressure on the peristaltic pump tubing, helping you to maximize the tube life and improve analytical precision. Too much pressure will result in faster tube wear and more noise. Too little pressure may result in irregular flow. In the above display, the clamp was tightened by a half turn at each arrow.

Ordering Information

Part Number Description
70-803-0643
TruFlo Sample Monitor 0 - 4.0mL/min
70-803-0774
TruFlo Sample Monitor 0 - 0.05mL/min
70-803-0788
TruFlo Sample Monitor 0 - 1.0mL/min
70-803-0890 TruFlo Sample Monitor for HF 0 - 4.0mL/min
70-803-0892 TruFlo Sample Monitor for HF 0 - 0.05mL/min
70-803-0891 TruFlo Sample Monitor for HF 0 - 1.0mL/min

TruFlo Specifications

  • Flow sensor: non-invasive thermoelectric sensor
  • Calibrated flow range: The TruFlo can be used at sample flows below the calibrated minimum with very good repeatability but the accuracy may be outside the specified range.
  • Calibration solution: Deionized water. The TruFlo is effective in identifying any change in sample flow with non-aqueous solutions, even though the absolute accuracy of the flow reading may be outside the specified range. With V2.0 software (released June 2014) users can calibrate the TruFlo with their own samples. Calibration profiles for specific solutions can be created, edited, deleted, imported, or exported.
  • Accuracy of flow reading: +/-5% error (with deionized water, within calibrated flow range).
  • Weight: 300g
  • Size: 100 x 40 x 60mm
Part Number Measurable flow range (mL/min) Calibrated flow range (mL/min) Internal volume (mL) Sample path
70-803-0643
0 - 4.0
 0.2 - 4.0
 0.12 Borosilicate glass + PEEK
70-803-0774
0 - 0.05
 0.001 - 0.05
 0.033 Quartz + PEEK
70-803-0788
0 - 1.0
 0.03 - 1.0
 0.055 Borosilicate glass + PEEK
70-803-0890 0 - 4.0 0.2 - 4.0 0.12 HF resistant
70-803-0892 0 - 0.05 0.001 - 0.05 0.033 HF resistant
70-803-0891 0 - 1.0 0.03 - 1.0 0.055 HF resistant

Non-aqueous solutions

The TruFlo is normally calibrated for aqueous solutions. With non-aqueous solutions, it can be reliably used to detect any change in the sample flow, but the actual flow reading will not be correct. If you routinely run non-aqueous solutions you can order a TruFlo calibrated for your specific application. You will need to specify what solution you are using and the TruFlo will be supplied pre-calibrated for your solution. When you order the TruFlo, simply add P/N 70-TFCAL, TruFlo calibration service.

General-purpose flow measurement

The TruFlo is a precision device for microflow measurement and has many applications other than monitoring ICP sample flows. It incorporates an accurate flow sensor to facilitate the real-time measurement of low liquid flow rates. The inert flow path comprises PEEK, borosilicate glass, and Teflon, making it suitable for use with most liquids. And the flow rate can be logged by your computer as well as displayed on the inbuilt screen. We can even customize the output to fit your requirements. Please contact Glass Expansion to discuss how the TruFlo can assist with your flow sensing requirements.

QA Kit

The QA Kit is a convenient package combining the TruFlo Sample Monitor, Inline Particle Filter, Eluo Nebuliser Cleaning Tool and Eluo Adaptor for Inline Filter.

  • The Inline Particle Filter is easily inserted in the sample tubing between the autosampler probe and the nebulizer and greatly reduces the risk of a blocked nebulizer.
  • The TruFlo instantly detects any reduction in the sample flow due to particulates trapped in the filter.
  • The Eluo and the Adaptor provide a quick and effective way to back-flush the filter and minimize any downtime.

The QA Kit enhances the day-to-day reproducibility of your results and greatly reduces the chance of a blocked nebulizer.

Order QA Kit 

QA Kit

QA Kit Ordering Information

Part Number Description
70-803-1108
Inline Filter for 1/16 inch Tubing
70-803-1160
Eluo Adaptor for Inline Filter
KT-1136 QA Kit
70-803-0749 Fitting Seal (Ferrule) 1/16 inch (PKT 10)
70-803-0748 Fitting Seal (Ferrule) 1.3mm (PKT 10)

Related Documents

TruFlo Flyer

TruFlo Sample Monitor Flyer
TruFlo App Note

Instructions for Cleaning and Handling the TruFlo

Customer Comments

(In response to a using the TruFlo) Yes I am very happy with the TruFlo, I wasn’t aware of the software that came with it which I find quite useful to check how flowrate has changed with time. I export the data from the TruFlo software as a csv file.

Government Toxicology laboratory – UK

The NEW TruFlo system is working really well.

University biology laboratory - Australia

If sample flow rate is suspect for some reason, one way to monitor it would be with Glass Expansion's TruFlo Sample Monitor.

Environmental consultant - USA

(In reference to the TruFlo) It works exceptionally well. I have two units connected to ICPs and have saved a great deal of troubleshooting time because of them.

Manufacturer - USA

(In reference to the TruFlo) No need to convince me - I consider this an essential tool for every lab that uses ICP-OES, ICP-MS.

University Analytical Chemistry Department - Canada