Categories
Tips & Tricks

Importance of soil testing laboratory & equipment for agriculture

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Our Labfit Australia Company certified in 1992, basically, we recline to area unit AN Australian-owned manufacturer of commercial-grade soil testing laboratory equipment laboratory instrumentality within the soil testing and carbon-sulfur analysis trade. Offered soil testing equipment takes a look at instrumentality performs soil tests with utmost exactness and examines soil’s texture on numerous parameters.

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We provide a large vary of merchandise, our specialty is soil testing equipment and Lab equipment. Soil Testing Laboratory Equipment Suppliers provide the best services to Australia and USA customers. Our soil testing instrumentality includes a pH scale tester that checks the pH scale level in very soil and details the acidity and pH scale of the soil in question. Our services have extended to the international market with our pH scale testing system creating headway within the USA and carbon-sulfur testing by Carbon Sulfur Analysers in Australia and the USA. We’ve been serving to our purchasers with soil testing for years, and our accuracy in soil testing testifies the impeccable name we have a tendency to hold.

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Labfit is providing quality Soil Testing Laboratory Equipment Suppliers to our clients that last for years. We use to supplies only the best pH Soil Testing Suppliers and Soil Testing Equipments Suppliers that includes Soil Testing Equipments like Carbon Sulfur Analysers which is Reliable Carbon and Sulfur combustion analysis perfect for harsh and extreme environments helpful for checking the amount of sulfur and carbon in the soil so the farmer can get the perfect ratio of nutrients, so they can easily get more profits. Another equipment is pH Soil Testing Suppliers or Labfit AS3000Q multi-electrode soil pH robots utilize tried and proven mechanical hardware and software so that all samples comply with precision and accuracy only a fully automated robotic system can provide the accurate soil pH which gives an idea to the farmers to choose the crop which is suitable for a particular soil and endues benefits to the farmers for their production.

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Labfit does not only serve the product it just full feels the dreams of buyers. We provide the best equipment for having long durability which is beneficial for the farmers for working in field with harsh environmental conditions. We hear our client’s wants and from this info, we are able to customize associates were from an existing product for you. We tend to additionally work with our customers to deliver new solutions for specific processes that may enhance production, outturn and relieve valuable workers for additional vital duties. Contact us to know more.

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Categories
Combustion Analyzer Tips & Tricks

Graphite on the CS1232 Carbon Analyser

[vc_row][vc_column width=”1/4″][vc_single_image image=”796″ img_size=”full”][/vc_column][vc_column width=”3/4″][vc_custom_heading text=”Configuring the Method” font_container=”tag:h3|text_align:left|color:%230055a5″ use_theme_fonts=”yes”][vc_column_text]To accurately achieve the desired results as shown in the table below, the method if the CS1232 Carbon Sulphur analyser first needs to be configured correctly.

  1. Set your lance delay time to the maximum time of the sample. This effectively turns off the lance purge. This needs to be done to prevent saturation of the Carbon IR cell. This happens because Carbon will be released from the sample very quickly.
  2. Set your maximum time to 600 seconds. This is to make allowances for the sample mass being used. The software will stop the analysis according to the end of analysis settings that are set.
  3. Set the baseline offset voltage to 50mV. As the Carbon concentration for Graphite is typically above 60%, you need to ensure that the settings used here is suitable for your instrument.
  4. Set the baseline end time (the time required that the sample must meet the stability settings for it to be deemed “stable” before the end of analysis is computed) to 15 seconds.
  5. Set the baseline stability (the allowable value that can vary from the computed/current baseline valve) to 15mV. This settings works in conjunction with step 4 above.

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It is very important to keep everything as clean as possible. This means all weighing utensils, the balance pan and the workspace else the weighed crucible could pick up fine graphite particles that will bias the result. It is also very important that any air conditioning or air flows within the lab are not directed at the weighing work area. This is because graphite is extremely light in mass and will easily be blown about the work area contaminating it.

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Add a balance enclosure to your lab. They are great for weighing very light samples and prevent the sample from being subjected to air flows within the lab caused by air conditioning systems/ventilation.

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Once the samples have been weighed, place the sample carousel into the CS1232 Carbon Sulphur analyser. Make sure that the furnace is at temperature 1350-1400° C. You can run the analyser at a lower temperature but the this will extend the analysis time. The temperature stated is the normal operating temperature that will allow you to measure Sulphur species as well.

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Categories
Tips & Tricks

Measuring Graphite Samples

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When measuring graphite samples using a Carbon Sulfur combustion analyser, it is very important that your work area is clean from all possible sources of contamination. A lot of problems associated with analysis of graphite is because of contamination issues. Sources of contamination include, dirty balance pan, dusty (graphite dust) work surfaces, transfer of graphite from hands to crucibles and placement of crucibles onto a unclean surface. Graphite dust is notoriously “sticky” and will easily attach itself to the bottom of crucibles and unknowingly, the operator will then measure a normal sample and get an extremely higher than expected Carbon result.

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Measurement of Graphite on the Labfit CS1232 Carbon Sulfur analyser is simplified with special calibration methodologies on the software. Being able to shift the linear curve and then calibrate mean that you can easily analyse very high concentrations of Carbon or Sulfur. To analyse Graphite add your sample to the crucible using a typical weight of 0.25 gram being careful not to contaminate the crucible with extra graphite. Analyse sample as normal. Graphite grease and other graphite products can be analysed on the Labfit CS1232 combustion analyser.

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Categories
Tips & Tricks

Resistance Vs Induction Furnaces

[vc_row][vc_column][vc_custom_heading text=”Induction vs Resistance” font_container=”tag:h3|text_align:left|color:%230055a5″ use_theme_fonts=”yes”][vc_column_text]Induction Furnaces are typically used for the analysis of steel and other hard metals. However, they can be used for powdered materials by adding additional accelerators. Induction Furnaces cannot be used for the analysis of hydrocarbons or any other volatile materials. As this is a “closed” combustion system, the built up of pressure will do damage to the instrument. Resistance Furnaces cannot be used for the analysis of steel and other hard metals. However, they are the preferred method for the analysis of powdered materials such as Coal, Coking Coal, Bauxite, Cement, Catalyst, Minerals Ores, Plant, Soils and even Oils.

When using Induction Furnaces for analysing powdered materials, a combination of Tungsten and Iron Chip accelerators have to be used. These accelerators create a lot of dust and combusted gasses therefore have to be filtered just after the furnace using a micron filter. This does not pose a problem when doing metal samples as they do not contain any moisture. Unfortunately this is not the case when analysing powdered materials as they contain both free and crystalline moisture. The free moisture can be removed by drying the samples in a drying oven. The crystalline moisture can only be removed at high temperature, usually above 1,000°C. This is where the problem occurs. When the crystalline moisture is released, it combines with the dust from the accelerators and condenses when it reaches the micron filter causing the filter to be blocked. Sometimes as often as every five samples. Another major problem is that the results may gradually drift lower as the filter becomes blocked. The operator may not be aware of this and over-come this problem, more frequent calibration checks might be required.

Automatic combustion tube cleaning assemblies are not required on Resistance furnace instruments as the combustion tube is not susceptible to a build-up of accelerator residues on the inside of the tube. The cleaning of the remainder of the combustion system is much easier and less complex than that of an Induction instrument. The cleaning of a Resistance combustion system can therefore be done by less specialised personnel.

Once the filters are blocked, they have to be removed and cleaned in an ultrasonic bath. On the Leco machines these filters form part of the auto combustion tube brushing system. This system contains several O Rings that have to be greased with silicone grease to prevent any leaks. Silicone grease cannot be dissolved with any solvent and therefore have to be wiped off with paper towels etc. A messy exercise indeed. Imagine doing this procedure tens of times a day!

Resistance Furnaces do not require the use of any accelerators apart from a small amount of Vanadium Pentoxide for certain hard to burn samples (optional). The combustion system is open to atmosphere making it ideally suitable for the analysis of samples containing volatiles (hydrocarbons such as coal and oil). Also there is no additional cost of expensive tungsten accelerators.

There can still be problems with blockages on Resistance machines, but nowhere near as bad as on Induction machines. Induction machines have faster analysis times, but it takes time to do all the cleaning. There is no limitation on sample sizes using Resistance Furnaces, whereas large samples sizes on Induction Furnaces tend to retard the combustion on certain samples.[/vc_column_text][/vc_column][/vc_row]

Categories
Tips & Tricks

Full-time presence in the US

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We would like to announce that we now have a full-time presence in the US with the induction of our new National Technical Sales and Service Manager, Dennis Warrenfeltz.

Taking over the reins from Bob Isaac in late 2013, Dennis brings a wealth of knowledge and skills to the table that we consider to be pivotal in servicing our USA customers needs. Already proven on many occasions, Dennis has a background in Chemical Instrumentation for which he was the manager at UGA extending nearly 23 years. His extensive experience and invaluable network will ensure all bases are covered when the need arises to utilise his expertise.

If you would like to contact Dennis directly please go to our Contact Us page and to the Agents section.

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