FormacsHT Total Organic Carbon (TOC) Analyzer

The FormacsHT TOC/TN analyzer uses high-temperature catalytic combustion to rapidly and reliably analyze total organic carbon (TOC) and total nitrogen (TN) values. The system is designed to measure nitrogen concentration and/or carbon fractions from various sample matrices. The instrument can operate as a stand-alone analyzer, but a random-access autosampler is also available for full automation. The instrument is optimized for sample type and a range of different catalysts, with operating temperatures specifically designed to permit analysis of all carbon and nitrogen fractions present in the sample. Fractions can be measured sequentially or simultaneously through automated sample preparation operations such as acidification and purging.

Features

• TOC analysis with stand-alone operation or autosampler, • Homogenization with automatic stirring (mechanical or magnetic), • Robust, rotating, septum-free injection ports, • Built-in Peltier cooler for optimal moisture removal, • Variety of vial sizes including septum vials, • Enables true system blank analysis, • Compliance with EPA 415.1, 5310B, DIN 38409 H3, ASTM D-5173, USP <643>, EU 2.2.44, ISO 8245, EN 1484, USEPA 9060A methods. For the FormacsHT instrument, various options and accessories are available, including the PrimacsMCS add-on module for carbon determination in solid materials, the ND25 total nitrogen detector, and the capability to measure nitrate and nitrite to provide a true Kjeldahl alternative. The FormacsHT analyzer meets the latest requirements for any laboratory, from low levels to extended high concentration ranges.

Application Areas:

• Drinking water. • Wastewater. • Surface water. • Seawater. • High-salt waters. • Process control. • Pharmaceutical industry. • Soil extracts. • Others. The FormacsHT analyzer can operate as a stand-alone instrument. For full automation, a random-access autosampler is available. The FormacsHT Analyzer analyzes and measures Total Organic Carbon (TOC), Total Carbon (TC), and Total Inorganic Carbon (TIC). The Total Carbon (TC) value is obtained by injection of the sample into the high-temperature combustion furnace.

Carbon Fractions

TC is converted to carbon dioxide (CO₂) through catalytic oxidation at temperatures up to 950°C. The CO₂ is dispersed into the carrier gas and CO₂ concentration is measured by a non-dispersive infrared detector (NDIR). TIC is determined by injecting the sample into a reactor containing acid, converting inorganic carbon to CO₂. The infrared detector measures the CO₂ produced during acidification. TOC concentration is calculated automatically by subtracting TIC from TC. (TOC = TC - TIC) Additionally, non-volatile organic carbon (N-VOC) can be measured through automated acidification and sample purging. TIC and VOC (volatile organic carbon) can be removed. N-VOC residues in the sample and the sample are directly measured by injection into the high-temperature combustion furnace. If VOC concentration is negligible, N-VOC equals TOC (TOC = N-VOC + VOC). Optionally, the FormacsHT can be configured to directly measure VOC. VOC can be purged from the liquid sample. Carrier gas + VOC is injected into the high-temperature combustion furnace and measured with NDIR.

Total Nitrogen (TN) and Total Kjeldahl Nitrogen (TKN) Analysis

A wide range of TN concentration is measured with high accuracy in a short analysis time using chemiluminescence. The sample is injected into a high-temperature furnace where it combusts catalytically. Oxidative pyrolysis converts chemically bound nitrogen to Nitric Oxide (NO). In the ND25 detector, NO reacts with quasi-stable Nitrogen Dioxide. Photons emitted from rapid decomposition of quasi-stable Nitrogen Dioxide are detected by a photomultiplier tube (PMT). The FormacsHT analyzer also offers an economical and safer alternative for Total Kjeldahl Nitrogen (TKN) analysis with an internal NN reactor for Nitrate + Nitrite (NN) analysis.The TKN value is determined in two steps, through TN analysis and NO₃+NO₂ chemical reduction analysis. The TKN value is obtained through automatic subtraction. TKN = TN – NN. This unique alternative method provides very fast analysis time (5 min.) and eliminates the use of hazardous acids. The FormacsHT TOC/TN analyzer combines TOC, TN, and TKN automation in a single system.

Features

• Instant TOC and TN measurements. • CLD detector for analysis of TN and NO₂ + NO₃. • Excellent alternative for Total Kjeldahl Analysis. • Low detection limits. • Fast analyses without hazardous reagents. • No sample preparation required. • Wide dynamic range. • Low-maintenance units. • Compliance with EN 12260, ISO 11905-2, ASTM D5176-91, DIN 38409 H27 methods.

PrimacsMCS Total Organic Carbon (TOC) Module for Solid Samples

The PrimacsMCS add-on module analyzes solid materials and works with FormacsHT liquid sample analyzers. It offers an economical solution for laboratories processing different sample types. The unit consists of two integrated reactors for TC and TIC analysis without any sample preparation. TC is determined by catalytic oxidation of the sample at 1100°C, which converts carbon to CO₂. TIC is determined by acidification of the sample in a separate reactor that converts IC to CO₂. PrimacsMCS uses the Formacs instrument's NDIR detector for CO₂ detection. The PrimacsMCS analyzer analyzes TC, TIC, and TOC. The software calculates the TOC concentration of samples by subtraction (TC - TIC = TOC).

Features

• Automatic balance interface. • Sample weight up to 3 grams. • 1 mg - 40 mg absolute carbon range. • Unique vertical sample loading vessel. • Reusable quartz sample boats. • Economical. • Minimal bench space requirement. • Integrated TC and TIC reactors. • No sample pretreatment required. • Compliance with ISO 10649, ISO 13137, EN 13639, EPA 415.1, ASTM D-2579, US EPA 9060A methods.

Abbreviations

• TOC: Total Organic Carbon. • TN: Total Nitrogen. • TIC: Total Inorganic Carbon. • IC: Inorganic Carbon. • N-VOC: Non-Volatile Organic Carbon. • TKN: Total Kjeldahl Nitrogen. • VOC: Volatile Organic Carbon.   Bircan Bozkaya Environmental Engineer Product Manager Trio Teknik Cihazlar