Specifications Specifications are subject to change without notice. See instrument-specific specifications in the APA 6000™ Process Analyzer Manual, Cat. No. 62005-18. Performance Range:10 to 1000 mg/L as CaCO Note: If sample is outside the specified instrument range, a sample out error may occur.
Page 5
Operation DANGER Handling chemical samples, standards, and reagents can be dangerous. Review the necessary Material Safety Data Sheets and become familiar with all safety procedures before handling any chemicals. DANGER La manipulation des échantillons chimiques, étalons et réactifs peut être dangereuse. Lire les Fiches de Données de Sécurité...
The reagent containers are sized to provide approximately 30 days of continuous operation. The reagents are factory-filled in one-liter containers and meet Hach quality standards. Prepare Reagent 2 prior to use by mixing one bottle of Indicator Powder (Cat. No. 27931-35) into 1 liter of Buffer Solution (Cat.
0.030 inch ID Tefzel. The small diameter allows for low-volume and high- flow rates. A higher flow rate, along with properly applied sample conditioning, prevents the tubing from plugging. General information for replacing the tubing is presented in the APA 6000 Installation and Maintenance Manual (Cat. No. 62005-18). Page 8 General Description 6200018overview.fm...
Page 9
Section 1 CAUTION PRUDENCE To familiarize yourself with Pour se familiariser avec les précautions à prendre lors de la manipulation, les handling precautions, dangers dangers et les procédures d'urgence, toujours lire les Fiches de Données de and emergency procedures, Sécurité des Produits avant de manipuler les récipients, les réservoirs et les always review the Material Safety systèmes de distribution contenant les réactifs chimiques et les solutions Data Sheets prior to handling...
Page 10
Section 1 Figure 1 Plumbing Diagram for a High Range Hardness Analyzer Table 1 Replacement Tubing Lengths for Figure 1 Item Description Length From... To... Reaction coil - part of Temperature Control Block Call Service Port 1 Reaction coil Tefzel tubing, 0.03 ID x 0.062 OD 60 cm (24 in.) Port 2 Sample 1...
Regular maintenance of the sample conditioning is required for proper operation. 1.2.8 High Range Hardness Reagents The APA 6000™ High Range Hardness Process analyzer uses six reagents. Each is supplied in a 1-L bottle designed to provide reagents for 30 days of continuous use.
Section 2 Theory of Operation The APA 6000™ High Range Hardness Process Analyzer is designed to provide reproducible results through consistent solution handling. Every step in an analysis is performed the same way each time, ensuring accurate results. Accuracy can be verified and established by measuring grab samples with a known concentration of analyte.
Section 2 4. A portion of the solution in the mixer is aspirated out and the buffer/indicator reagent is added. This solution aliquot and the reagent are both dispensed back into the mixer. 5. The solution in the mixer may now start to turn red. 6.
Section 4 Parameter Specific Functions 4.1 Calibration History This option allows you to review past calibration data. 1. Press the MENU key to start from the Main Menu. 2. Select Sensor Menu and press ENTER. 3. Select the sensor by name and press ENTER. 4.
Section 5 Bench Method Procedure 5.1 Standardization Standardize Reagent 3 with Standard 2 (1000 mg/L as CaCO ) to determine the titer value of Reagent 3 before testing samples for total hardness. Perform a standardization before any sample analysis, as reagents may change over time.
Section 5 Repeat Average the three steps 1-8 twice. values for the titer of Reagent 3 9. Repeat steps 1-8 twice. 10. Use the average value for the titer of Reagent 3. 5.3 Testing Samples for Total Hardness Refer to Table 9 to choose between using a buret or a digital titrator, depending on the sample concentration.
Section 5 ® 5.3.1 Total Hardness Digital Titrator Method Refer to Table 10 on page 24. 1. If a Digital Titrator 2. Insert a clean delivery Turn the delivery knob 4. Refer to Table 10 is used, fill a clean and tube into the titration to eject a few drops of choose the size of the...
Section 5 5.3.2 Total Hardness Buret Method Refer to Table 11 on page 24. 1. If a buret is used, fill 2. Refer to Table 11 3. Using the volumetric 4. Dilute to about the a 25-mL buret with choose the size of the pipet, transfer the sample 100-mL mark with Reagent 3.
APA 6000™ High Range Hardness Reagent 2 Kit........8 mL ....each..27936-00 APA 6000™ High Range Hardness Reagent 3.......... 5–20 mL ....1 L..27937-53 APA 6000™ High Range Hardness Standard 2, 1000 mg/L....60 mL (cal. only)..... 1 L..27933-53 Water, deionized ..................<100 mL ....4 L....272-56 Required Apparatus for Bench Method Buret, 25 mL, Class A, certified ...............