Hach AutoCAT 9000 - User Manual

Questions and Answers:

K
Kristin DavisSep 10, 2025
Why Auto-scaling is unable to set the current range or the volume increment for the titration on Hach AutoCAT 9000 Laboratory Equipment?
- E
  Erik WrightSep 10, 2025
  Auto-scaling relies on the initial current measurement and an estimate of the initial slope of the titration curve to predict the approximate end point. If the signal is very low or the noise level is very high, it may not be able to estimate the end point accurately. Try re-running the analysis, as Auto-scaling is often successful on a second attempt. Alternatively, turn Auto-scaling off, manually set the current range and volume increment, and then re-run the analysis.
P
pswansonSep 9, 2025
How to decrease the number of points in the titration curve on Hach Laboratory Equipment?
- P
  Paul KingSep 9, 2025
  Decrease the number of points before the end point by navigating to Methods>Method library> “method“ Titr.>Auto-scaling Yes> No. of points before EP.
S
Sandra RothSep 8, 2025
How to increase the number of points in the titration curve on Hach AutoCAT 9000 Laboratory Equipment?
- J
  Jamie EvansSep 8, 2025
  Increase the number of points before the end point by going to Methods>Method library> “method“ Titr.>Auto-scaling Yes> No. of points before EP.
R
Rachel FergusonAug 22, 2025
What to do if the Hach AutoCAT 9000 Laboratory Equipment display does not show up or is too dark?
- S
  Samantha LoganAug 23, 2025
  First, check if the power switch on the back of the instrument is turned ON. Ensure the power cord is fully inserted into the back of the instrument and properly plugged into the wall outlet. Confirm that the wall outlet has power. Check the fuses and replace them if necessary.
B
Brian MossSep 5, 2025
What to do if the stormy icon appears immediately after selecting a new method on Hach AutoCAT 9000 Laboratory Equipment?
- G
  Gina BerrySep 5, 2025
  Install the appropriate titrant and then enter the titrant concentration, or run the titrant calibration routine.
T
Terri BrownSep 4, 2025
Why are Hach AutoCAT 9000 Laboratory Equipment titration curves fairly asymmetrical?
- E
  Eddie AlexanderSep 4, 2025
  AEPD works best with symmetrical titration curves, which usually mean the data collection parameters are fully optimized. Adjust the data collection parameters to promote collection of a symmetrical titration curve. You can also use the zoom window cursors to restrict the end point determination to a symmetrical region about the end point.
R
Richard Crawford PhDSep 3, 2025
What to do if the ends of the Hach AutoCAT 9000 titration curve are very noisy or distorted?
- P
  Patrick WaltonSep 3, 2025
  Use the zoom window cursors to restrict the end point determination to a symmetrical region about the end point.
M
Michael HortonSep 2, 2025
What to do if the instrument displays a message asking the user to change the data point range on Hach AutoCAT 9000?
- V
  vparksSep 2, 2025
  This message appears because AEPD needs at least six points on each side of the end point for linear segments in regression analysis. If AEPD can't find six points, it stops. To fix this, use the manual end point determination routine (MEPD), select a wider symmetrical region about the end point with the zoom window cursors, and reduce the volume increment to collect more data points. Adjusting other data collection parameters might also help to get a symmetrical titration curve.
A
amanda02Sep 1, 2025
What does question mark on Titrant Tab mean on Hach Laboratory Equipment?
- M
  Michael CopelandSep 1, 2025
  It means the titrant calibration is about to expire. You should recalibrate the titrant or reset the titrant concentration to the correct value.
P
phoffmanAug 30, 2025
Why is the titration very slow and there are too many points before the end point on Hach AutoCAT 9000?
- M
  medinaashleyAug 31, 2025
  The volume increment may be too small. Increase the volume increment, which is adjustable during the titration procedure.

Hach AutoCAT 9000 Specifications

General

Model	AutoCAT 9000
Category	Laboratory Equipment
Power Supply	100-240 VAC, 50/60 Hz
Operating Temperature	5-40°C
Accuracy	±2% of reading
Outputs	USB, RS-232
Weight	10 kg
Connectivity	USB, Ethernet

Summary

Safety Information

Hazard Information

Explains signal words (Danger, Caution, Note) used for hazard communication.

Precautionary Labels

Advises reading all labels and tags for safety information.

Instrument Specifications

Methods and Measurement Specifications

Details titration methods, measuring ranges, and printout options.

Results and Storage Specifications

Covers results display, storage capacity, and sample list capabilities.

Hardware and Environmental Specifications

Includes burette, inputs/outputs, general specs, power, and environmental conditions.

Introduction

1.1 General Information

Provides an overview of the AutoCAT 9000 and its capabilities.

1.2 Instrument Startup Summary

Outlines the step-by-step process for setting up the instrument.

1.3 Unpacking

Details the procedure for removing and inspecting instrument components.

1.4 User Access Levels

Explains the different user access levels (Supervisor and Routine).

Instrument Assembly

2.1 Operating Environment

Specifies the recommended ambient conditions for instrument operation.

2.2 Instrument Assembly Procedures

Guides the physical assembly of the instrument, including bottle holder, electrodes, and burette.

Basic Operation

3.1 Instrument Display and Keypad

Explains the instrument's display, keypad layout, and basic navigation.

3.2 AutoCAT Main Menus

Describes the main menu structure and navigation within the AutoCAT software.

3.3 System Configuration

Covers essential system settings like supervisor code, user ID, language, and time.

3.4 Edition Mode

Explains how to use the Edition feature for multi-tasking during procedures.

3.5 Using Sub-IDs

Details how to use Sub-IDs for storing optimized parameters for different sample points.

Software Setup

4.1 Accessing Supervisor Mode

Guides the user on how to enter supervisor mode for software setup.

4.2 Software Setup for Electrode and Temperature Sensor Installation

Details the software steps for installing electrodes and temperature sensors.

4.3 Software Setup for Burette Installation

Explains the software procedures for installing the burette.

4.4 Software Setup for Titrant Installation

Covers the software steps for installing or switching titrants.

4.5 Setting Titrant Concentration

Guides on how to input or calibrate the titrant concentration.

4.6 Obtaining the Certificate of Analysis for Hach Reagents

Explains how to download COA for reagent concentration details.

Collecting and Accessing Data

5.1 Amperometric Method Overview

Introduces the various amperometric methods supported by the instrument.

5.2 AutoCAT Titration Process

Details the three main stages of titration: data collection, endpoint determination, and calculation.

5.2.1 Data Collection Parameters

Covers parameters like Current Range, Volume Increment, Predose, and Auto-scaling.

5.2.2 Endpoint Determination Methods

Explains Manual (MEPD), Automatic (AEPD), and Auto Detection for finding the endpoint.

5.2.3 Concentration Calculation Parameters

Lists parameters like Titrant Concentration, Sample Volume, Dilution, and Reductant Concentration.

5.2.4 Statistical Analysis of Results

Details methods for calculating the mean and standard deviation of results.

5.2.5 Accessing Archived Results

Explains how to retrieve and view stored analysis results from the GLP archives.

Calibration Procedures

PAO;5.64 mN Amperometric Forward Titrant Calibration

Step-by-step guide for calibrating the PAO titrant for forward titration.

Iodine Amperometric Back Titrant Calibration

Guide for calibrating the iodine titrant for back titration.

Sampling

7.1 Chlorine Sample Considerations

Discusses factors affecting chlorine sample stability and measurement.

7.2 Container Pretreatment

Details how to prepare sample containers to avoid chlorine demand.

7.3 Sample Handling

Provides guidelines for handling and storing samples for analysis.

7.4 Sample Preparation for Back Titration

Describes the sample preparation steps specific to back titration methods.

Titration Procedures

Chlorine Dioxide Generator Yield

Procedure for calculating the yield of a chlorine dioxide generator.

Chlorine Dioxide, Amperometric Forward Titration

Method for determining chlorine dioxide concentration via forward titration.

Free Chlorine, Amperometric Forward Titration

Procedure for measuring free chlorine concentration using forward titration.

Total Chlorine, Amperometric Back Titration

Method for determining total chlorine using back titration.

Total Chlorine, Amperometric Forward Titration

Procedure for measuring total chlorine via forward titration.

Sulfite, Amperometric Back Titration

Method for determining sulfite concentration using back titration.

Total Oxidants, “Quick” Two Step Amperometric Titration

Procedure for determining total oxidants using a two-step titration.

Chlorite, “Quick” Two Step Amperometric Titration

Method for determining chlorite concentration using a two-step titration.

Manual Endpoint Determination Guidelines

Guidelines for manually determining titration endpoints.

Maintenance

9.1 General Instrument Care

Covers general protection, display care, and cleaning of the instrument.

9.2 Maintenance Intervals

Provides a schedule for routine maintenance tasks.

9.3 Replacing the Fuse

Step-by-step instructions for replacing the primary fuse.

Troubleshooting

Electrical and Mechanical Problems

Addresses power, display, leaks, and flow issues.

Data Collection and Endpoint Issues

Covers curve quality, speed, and automated endpoint determination problems.

Accuracy and Warning Signs

Troubleshooting for result accuracy and instrument warning indicators.

Amperometric Titration Theory

1.1 General Titration Theory

Explains fundamental concepts of redox reactions and reaction measurement.

1.2 Common Errors and Interferences

Discusses factors affecting chlorine analysis, like electrode deposition and nitrite.

1.3 Errors Common to Total Chlorine Determinations

Details errors related to the iodide/triiodide reaction in total chlorine analysis.

1.4 Shift of Endpoints Due to Sample Iodine Demand

Explains how sample iodine demand affects titration endpoints.

1.5 Order of Reagent Addition

Discusses the importance of reagent addition order for saline water samples.

Printer Installation and Setup

AutoCAT 9000 Printer Setup

Guides on connecting and configuring the printer for analysis reports.

Sample Printout Configuration

Details how to configure printout options like Title, Detail, Curve, and Line Fit.

Replacement Parts & Accessories

Replacement Parts

Lists part numbers for common replacement components of the instrument.

Accessories

Lists available optional accessories for the AutoCAT 9000.

Low Level Standards & Testing

Preparation of Low Concentration Chlorine Standards

Discusses practical limitations and recommendations for preparing low-level chlorine standards.

Assessing Standard Accuracy

Explains how to verify standard accuracy using reference methods or standard additions.

AutoCAT 9000 Validation Study

Validation Study Overview

Describes the study conducted to assess the instrument's performance at low chlorine ranges.

MDL, Accuracy, and Precision Determination

Details the determination of Method Detection Limit (MDL), accuracy, and precision.

Analysis Guidelines

Provides guidance on sample handling and electrode performance for accurate measurements.

General Information

Customer Service Overview

Information about Hach Company's customer service and support.

Certification

Product Safety and Immunity Standards

Lists safety certifications and EMC/immunity standards met by the instrument.

Emissions Standards

Details compliance with emissions standards for electrical equipment.

How To Order

Ordering Information

Provides contact details and required information for placing orders.

Technical and Customer Service

Contact information for technical and customer support in the USA.

International Customers

Information on how to contact Hach for international support and dealer locations.

Repair Service

Repair Service Procedures

Instructions and contact information for obtaining repair services.

Warranty

Product Warranty Terms

Details the one-year warranty period and coverage limitations.

Limitation of Remedies

Outlines the exclusive remedies available for warranty breaches.

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