The document specifies the requirements for a microprocessor-controlled TOC analyzer. It must be able to directly measure total carbon, total organic carbon, and purgeable organic carbon in water samples. It uses high temperature catalytic combustion up to 900°C and non-dispersive infrared detection. It must have a measuring range of 1-500 mg/L carbon, precision within 3%, and detection limit of at least 500 ppb carbon. The analyzer and auto-sampler require 240V 50Hz power and it uses nitrogen or high purity air as carrier gases. It includes an auto-sampler, syringes, printer, manuals, spare parts, and application software in English.

1. Equipment Specification: TOC ANALYSER, MICROPROCESSOR
CONTROLLED
Version 2 40.052-1/2
40.052 TOC ANALYSER, MICROPROCESSOR
CONTROLLED
Approval Date: January 2008 Version: 2
Purpose
 The TOC Analyser breaks down all the organically bound carbon molecules
to single carbon unit that can be measured quantitatively.
 To analyse water samples for aggregate carbon content.
Conditions and Requirements
The instrument shall be compatible with the climatic and other environmental
conditions of Indian laboratories.
Specifications
Description  Microprocessor-controlled analyser with facility for
direct measurement of Total Carbon (TC) and Total
Organic Carbon (TOC) in aqueous samples and
suspensions,and purgeable organic carbon (POC) in
samples where purging is possible,having capability
for accepting samples containing suspended solids up
to 500 m size
Method  High temperature catalytic combustion with adjustable
temperature range at least up to 900 oC± 2 oC drift
 Non-dispersive infrared (NDIR) detector system
Result output
options
 Computer screen
 Printer( if not in-built) and facility for printer port
 ASCII file transferable to floppy
Data processing  Linearisation
 Baseline correction
 Selection of best calibration curve
 Automatic exclusion of anomalous values
 Statistical evaluation, like SD, CV
Operation and
Performance
 Measuring range : 1 mg/L to at least 500 mg/L of
Carbon
 Precision: within 3%
 Detection Limit: at least 500 ppb Carbon
 Linearity: 1% of calibrated range
Power supply  Analyser: 240 volts, 50 Hz  10%
 Auto-sampler: 240 volts, 50 Hz  10%

2. Equipment Specification: TOC ANALYSER, MICROPROCESSOR
CONTROLLED
Version 2 40.052-2/2
Carrier Gas  Nitrogen or Air of high purity
Sample
introduction
options
 Manual loading through sampling boat for samples
with high suspended matter(> 100 mg/l), and syringe
injection or automatic capillary suction
 Automatic with auto-sampler
Accessories
 Auto-sampler
 Micro-litre syringe 250 L and 2500 L
 Gas cylinder with purified Nitrogen or Air as recommended with regular(2-
stage) and necessary tubings and connectors
 Printer (if not provided as in-built)
 Operation and maintenance manual in English
 Dust cover
 Spares and consumables for two years’ operation for each of the following:
 Main system
 Auto sampler
 Printer
 Analytical manual including applications for TC ,TOC and POC
measurements
 Instruction and Service manual with one set of the required tools
 Parts catalogue
 Application softwares in English
 Trouble shooting charts