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Mengenal Karl Fischer: Sang Ahli Kimia di Balik Standar Kadar Air

Wed, 06 May 2026 08:38:00 +0000

Karl Albert Otto Franz Fischer (1901–1958) adalah seorang kimiawan asal Jerman yang mengubah cara dunia industri mengukur kelembapan. Pada tahun 1935, saat bekerja di industri petrokimia, ia mempublikasikan metode penentuan kadar air yang kini menjadi standar emas di laboratorium seluruh dunia: Titrasi Karl Fischer.

Apa Itu Titrasi Karl Fischer?

Titrasi Karl Fischer adalah metode analisis kimia yang digunakan khusus untuk mengukur kandungan air (water content) dalam berbagai jenis sampel. Berbeda dengan metode pengeringan oven yang menguapkan segala zat yang mudah menguap, metode ini hanya bereaksi secara spesifik dengan molekul air (\(H_{2}O\)).

Ada dua teknik utama dalam titrasi ini:

Volumetrik: Reagen yang mengandung iodin ditambahkan menggunakan buret otomatis. Teknik ini ideal untuk sampel dengan kadar air tinggi (di atas 1% atau hingga 100%).
Koulometrik: Iodin dihasilkan secara elektrokimia langsung di dalam sel titrasi. Teknik ini sangat sensitif dan cocok untuk mendeteksi kadar air dalam jumlah sangat kecil (rentang ppm atau mikrogram).

Mengapa Metode Ini Sangat Penting?

Metode Karl Fischer dianggap sebagai salah satu cara paling akurat karena keunggulannya dalam:

Akurasi Tinggi: Dapat mendeteksi air bahkan pada konsentrasi yang sangat rendah (hingga 1 ppm).
Kecepatan: Proses analisis biasanya hanya memakan waktu beberapa menit saja.
Spesifisitas: Hanya bereaksi dengan air, sehingga tidak terpengaruh oleh penguapan pelarut lain.

Aplikasi di Berbagai Industri

Metode ini digunakan secara luas oleh pemerintah, akademisi, dan industri raksasa seperti:

Farmasi: Memastikan stabilitas obat-obatan dalam bentuk tablet atau bubuk.
Minyak & Gas: Mengukur kadar air dalam bahan bakar dan pelumas untuk mencegah korosi mesin.
Makanan: Menjaga kualitas produk seperti madu, cokelat, atau minyak goreng agar tidak cepat rusak.
Kimia: Pengujian bahan baku dan produk jadi untuk memastikan kemurniannya.

"Satu Alat, Dua Solusi: Cek Seri KF-51 kami untuk Titrasi Volumetrik & Koulometrik Sekaligus."

Webinar: 3D Dynamic Image Analysis Compared to Other Methods to Identify Crystal Shape

Tue, 11 Jun 2019 08:52:00 +0000

In this webinar we will present data from research conducted at University of Hohenheim on crystal samples of Sodium Chloride, Mono Sodium Glutamate (MSG) and Sugar. These crystals all exhibit particle shapes which diverge from spherical shape by different degrees. These different particle shapes, as well as sizes, can be measured and quantified on the same instrument – a dynamic image analyzer. Those measurements were compared with measurements made on other instruments – a stand-alone laser diffraction analyzer, a simple scanner reporting size and shape, and a manual microscope and SEM. We’ll show how the image analyzer provides data that agree closely with sizes and shapes measured on the other three instruments, in all three orthogonal dimensions and on a much larger and representative sample of particles. Particle shape is becoming an ever more used measurement technology in characterizing particulate samples, because size alone is recognized to often not provide distinguishing differences among samples.

Join us in learning more about Image Analysis and how it has become the most common technology for measuring particle morphology. Special guest, Patrick Wilms from the University of Hohenheim will talk about his experience using Microtrac’s Microtrac PartAn 3D and the advantages of imagining technology.

This webinar is scheduled for Thu, Jun 20, 2019 11:00 AM – 12:00 PM EDT.

Unable to attend? Register to receive the webinar recording!

Webinar: Hybrid Technology For Complete Metal Powder Morphological Characterization

Sun, 12 May 2019 16:47:00 +0000

Microtrac’s Sync uses an innovative hybrid method of particle size and shape measurement that combines laser diffraction and image analysis. Metal Powders require high flowability and packing density for even, fast loading and high strength in final parts. Key parameters to spec are Sphericity, Smoothness, and Size Distribution. These properties are important for outgoing QC for Metal Powder manufacturers and incoming QC for Powder Metalllurgy parts manufacturers. This presentation describes the QC requirements and a combination analytical instrument which measures them.

Join us for this webinar as we cover:

How Microtrac integrated laser diffraction and dynamic image analysis technology in one instrument
Metal Powder Parts Manufacturing Methods
Importance of Powder Morphology
Quality Control for Metal Powders

Join us for this free webinar on Thursday, May 30th, 2019.

Can’t attend? Sign up to get the recording!

Webinar: Introducing the Microtrac Sync: Hybrid Laser Diffraction and Dynamic Image Particle Analyzer

Tue, 18 Sep 2018 10:45:00 +0000

With over 25 years at the forefront of technological advances in measuring material size and shape in real-time, Microtrac is the established leader in delivering innovative analysis solutions.

Microtrac is proud to announce our new synchronous size and shape analyzer, Sync, which integrates the world’s leading laser diffractiontechnology with the world’s leading dynamic image analysis technology – Same bench, same sample, same run, same flow cell, same user interface. Users can now get their tried and true particle size distribution together with particle morphology in a single, easy to use graphical user interface.

Using our patented methodology, the Sync interrogates particles, wet or dry, with laser light while simultaneously a high-speed digital camera takes images. The data collected is processed by our FLEX software and presents the user with particle size and shape information. While the software is powerful, the graphical user interface is intuitive and easy to use. The Sync enables users to get more detailed information about their material than ever before and will quickly render size-only instrumentation outdated and incomplete.

Please join us for an in depth webinar on the features and capabilities of the Sync. Let us share with you how Microtrac is changing the paradigm for material characterization.

Join us on Thursday, September 20, 2018 at 11AM EDT

Click Here to Register

Unable to attend? Register to receive the recording!

Webinar: Metal Powders Quality & Process Control Based On Powder Morphology

Sun, 08 Oct 2017 16:25:00 +0000

Morphological properties, which include size and shape, are important quality control specification parameters for metal powders. These properties are important for outgoing QC for Metal Powder manufacturers and incoming QC for Powder Metalllurgy parts manufacturers. This presentation describes the QC requirements and a combination analytical instrument which measures them.

Join us for this webinar as we cover:

Metal Powders Processes
Metal Powder Parts Manufacturing Methods
Importance of Powder Morphology
Quality Control for Metal Powders

This free webinar, Metal Powders Quality & Process Control Based On Powder Morphology airs on Thursday, October 19, 2017.

If you’re unable to attend, we welcome you to sign up to get the free recording.

Click here to register

Identifying good, bad, and ugly particles with dynamic image analysis

Fri, 04 Aug 2017 05:22:00 +0000

Published on Jul 27, 2016

Learn how you can identify good, bad, and ugly particles with advanced data analysis capability featured in Microtrac's Imaging technology. This webinar will explain the following; how to identify contaminants during production/handling/packaging, impact of too high/low aspect ratio, surface roughness, sphericity, or transparency has on final product quality, seeing is believing - view particles, search capability - display results based on user defined conditions, benefits of comparing morphological parameters, and graph manipulation. Dynamic Image Analysis is ideal for measuring the size and shape of materials from several microns to several millimeters.

Determination of chlorine and sulfur in 3,5-dichloro-2-hydroxybenzenesulforic acid sodium salt

Thu, 03 Aug 2017 15:09:00 +0000

Instruments : AQF-100

Method : Combustion-ion Chromatography

Related standard :

Concentrations of fluorine, chlorine, bromine, iodine, and sulfur can be determined and accurately by using a combustion ion chromatography (CIC) system combining an Automatic Quick Furnace Model AQF-100 which safely combust samples with an ion chromatograph.

Using Image Analysis to Replace Sieves

Thu, 03 Aug 2017 03:44:00 +0000

If you’re still using sieve analysis for your particle analysis needs, you may be faced with frequent measurement errors such as failing to collect the complete set of particles from each sieve, mis-weighing, incorrect data entry or calculation errors with distribution percent values. Not to mention this method can be frustratingly slow and labor-intensive. Image analysis gets you past these hurdles with minimal effort.

In this webinar you'll learn about making the transition to image analysis from sieving!

Microtrac, Inc. is a particle characterization instrumentation company dedicated to particle science and customer satisfaction. Microtrac released the first commercially available particle size analyzer using laser diffraction. We have over 40 years particle characterization experience and technology.

Click here to go to the webminar...

Published on Jun 1, 2017

Measuring Electric Power Generation By-Products

Wed, 02 Aug 2017 05:49:00 +0000

Quality Control of Power Generation Plant By-Products

Coal represents a major contributor to the production of electric power. The large amount of coal used for power generation produces by-products that are deemed deleterious: sulfur dioxide, nitrogen oxides, particulate and carbon dioxide. This presentation outlines some of the advances and positive actions taken by the electric power companies to comply with these acts by using by-products of coal burning for electric power.

Join us on July 27th as we go over:

Coal power generation pollutants
Pollution abatement processes
By-products produced from pollutants
Particle characterization for quality of by-products
Particle characterization technologies

This free webinar, Measuring Electric Power Generation By-Products aired on on Thursday, July 27, 2017.

3D Image Analysis : Know Your Materials

Tue, 01 Aug 2017 10:17:00 +0000

Would you like to collect 3D particle size and shape data of your materials ranging in size from 35um to 35,000um? If you have a need to identify and quantify different particulate components in one sample, this webinar will show you how. This can be easily accomplished with patented 3D image analysis and use of the search query and filter/classification features in the software.

Find out what advantages there are with 3D image analysis technology and go over its important advantages over 2D technology.

Go in-depth with Microtrac’s powerful, patented 3D measurement software. The reporting is simple, powerful and flexible. Learn more in our webinar!

Speaker: Terry Stauffer

Terry Stauffer has over 40 years of particle characterization experience. He has worked for all the major players in the particle analysis industry at some point in his career. He will be answering all your image analysis questions at the end of the webinar!

This free webinar, 3D Image Analysis: Know Your Materials aired on Thursday, March 30, 2017