Hach DR 5000 5.5.5 Sample blank

53

Standard Operations

5.5.5 Sample blank

Turbidity and color in the sample matrix can falsify the results of a

photometric analysis. The interference factors come from the

sample or are created by reactions with the reagents.

The influence of turbidity and/or color can be eliminated or reduced

by taking a sample blank reading.

In the barcode mode, a special cuvette/vial (TNT919) containing

the sample blank is placed in cell compartment #1 after the sample

reading has been taken and is automatically measured. The

sample reading is then corrected by adding or subtracting the blank

value. The final result is displayed, with the message "After blank

value corr.".

Some barcode tests do not require a sample blank value to be

determined, as turbidity and color are dealt with during the test

Send Data icon /

SendData To send data to a printer, computer or USBmemory stick (Type A)

Timer icon

This functions as a stopwatch. It helps to ensure that the steps of an analysis are correctly timed

(e.g. reaction times, wait times, etc., can be exactly specified). When the specified time has

elapsed, an acoustic signal is emitted. The use of the timer has no influence on the measurement

program.

Dilution Factor Off/On

A corrective dilution factor can be entered in order to take account of certain properties.

The number entered at the dilution factor prompt will be multiplied by the result to compensate for

the adjustment. For example, if the sample has been diluted by a factor of 2, enter 2. The default

setting of the dilution factor is turned off.

Note: When a dilution is in effect, the dilution icon will appear on the display.

Note: If undiluted samples are used, set the dilution factor off.

Chemical Form Some of the stored tests/methods allow to select the chemical form and the measuring range.

Edit To modify an existing program

Save as User Program To store the selected parameters as a User Program, see section6.1 on page 61.

Recall Data Call up saved measurement data, wavelength scans or time courses, see section 5.3 on

page 35.

InstrumentSetup Basic data of the instrument, see section 5.2 on page 23.

Table 5 Barcode program options (continued)

Options Description

Contents

Main Page Table of Contents Page Table of Contents Page Section 1 Specifications Specifications are subject to change without notice. Page Section 2 General Information 2.1 Safety information LASER CLASS 1 2.1.1 Use of hazard information 2.1.2 Precautionary labels General Information 2.1.3 Class 1 LASER 2.1.4 Chemical and Biological Safety 2.1.5 Source Lamp Safety General Information 2.2 Overview of product Page Section 3 Installation 3.1 Unpack the instrument 3.2 Operating environment 3.3 Connection 3.4 Cell compartment, Multi Cell Holder, 100 mm Cell Adapter (optional) Page Page 3.5 Beam path Section 4 Start Up 4.1 Power the instrument on and off 4.2 Language selection 4.3 Self-Check Page Section 5 Standard Operations 5.1 Overview 5.1.1 Tips for the use of the touch screen 5.1.2 Use of the alphanumeric keypad 5.1.3 Main Menu Table 2 Main Menu options 5.2 Instrument Setup mode 5.2.1 Operator ID 5.2.2 Sample ID 5.2.3 Date and time 5.2.4 Display and sound preferences 5.2.5 Lamp Control 5.2.5.1 VIS-Lamp and UV-Lamp 5.2.5.2 Effect caused by the lamp settings on the Measuring Mode Page 5.2.6 PC and printer 5.2.6.1 Printer setup Page 5.2.6.2 Print data 5.2.6.3 HACH Data Trans 5.2.7 Password 5.2.7.1 Password deactivation Page 5.3 Store, recall, send and delete data 5.3.1 The Data Log 5.3.1.1 Auto/manual data storage 5.3.1.2 Recall stored data from the data log 5.3.1.3 Send data from the data log Page 5.3.2 Store, recall, send and delete data from wavelength scan and time course 5.3.2.1 Data storage from wavelength scan or time course 5.3.2.2 Recall stored data from wavelength scan or time course 5.3.2.3 Send data from wavelength scan or time course Page Page 5.4 Stored Programs 5.4.1 Select a saved test/method; enter user-specific basic data 5.4.2 Stored program options Table 4 Stored programs options (continued) 5.4.3 Use of program timers 5.4.4 Set the reading mode 5.4.4.1 Take single wavelength measurements (single reading) 5.4.4.2 Take single wavelength measurements (continuous readings) 5.4.5 Set the dilution factor 5.4.6 Run a standard adjust 5.4.7 Set the chemical form 5.4.7.1 Change of the default setting of the chemical form 5.4.8 Run a reagent blank 5.4.9 Analysis of samples 5.4.10 Add stored programs to the favorite programs list 5.5 Barcode Programs 5.5.1 Complete a barcode 13 mm test/vial 5.5.2 Select the measuring range 5.5.3 Select the chemical evaluation form 5.5.3.1 Change of the default setting of the chemical form 5.5.4 Basic test-specific and sample-specific data settings 5.5.5 Sample blank 5.5.6 Update/edit barcode tests 5.5.6.1 Manual update of a barcode test Page Page 5.5.6.2 Update an existing barcode test 5.5.6.3 Program a new test 5.5.7 Upgrade of the instrument software Page Page Section 6 Advanced Operations 6.1 User Programs 6.1.1 Program a user method Page 6.1.1.1 Single wavelength settings 6.1.1.2 Multi wavelength settings Page 6.1.1.3 Calibration settings for single and multi wavelength mode Page Page Page 6.1.1.4 Store a user program 6.1.1.5 Additional user-defined parameters and functions Page 6.1.2 Free programming program type 6.1.2.1 Measurement process 6.1.2.2 Enter a new element of a measuring sequence Page 6.1.2.3 Enter the calibration formula (evaluation formula) Page Page 6.1.2.4 Enter variables 6.1.2.5 Save a free programming user program 6.1.3 Select a user program 6.1.4 Add, edit and delete user programs from the favorites list Page 6.2 Favorite Programs 6.2.1 Recall a favorite program 6.2.2 Delete a favorite program 6.3 Standard Addition monitoring/checking results 6.3.1 Complete a standard addition Page Page Page 6.4 Single Wavelength (absorbance, concentration and transmittance measurements) 6.4.1 Set up single wavelength mode Page 6.4.2 Take single wavelength measurements (single reading) 6.4.3 Take single wavelength measurements (continuous readings) 6.5 Multi-Wavelength mode measurements at more than one wavelength 6.5.1 Set the reading mode at different wavelengths Page Page 6.5.2 Complete a measurement in the multi wavelength mode 6.6 Wavelength Scan mode recording of absorbance and transmittance spectrums 6.6.1 Set up the wavelength scan Page Page 6.6.2 Wavelength scan reading 6.6.2.1 Navigation of the wavelength scan graph or a wavelength scan analysis 6.6.3 Work with reference scans Page 6.7 Time course of absorbance/transmittance 6.7.1 Time course setup parameters 6.7.2 Time course scan reading 6.7.3 Analysis of time course data 6.7.3.1 Navigation of a time scan or a time scan analysis Page 6.8.2 Upgrade of the instrument software 6.8.3 Optical checks 6.8.3.1 Wavelength check 6.8.3.2 Noise check Page 6.8.3.3 Stray light check 6.8.3.4 Absorbance check 6.8.3.5 Drift check 6.8.3.6 Verification kit Page 6.8.4 Output checks 6.8.5 Lamp history Page 6.8.8 Instrument Backup Page Page Page Section 7 Maintenance 7.1 Cleaning requirements 7.1.1 Spectrophotometer 7.1.2 Display 7.1.3 Cuvettes/sample cells 7.2 Lamp replacement 7.2.1 Tungsten lamp replacement 7.2.2 Deuterium lamp (UV) replacement 7.3 Fuse replacement 7.4 Filter pad maintenance 7.4.1 Filter pad replacement Page Section 8 Troubleshooting Page Section 9 Replacement Parts Page Section 10 Contact Information Page Section 11 Limited Warranty Limitations Limitation of Remedies Page Index