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CEM iPrep 12 Скачать руководство пользователя страница 9

5

Important Safeguards

Compounds Unsuitable for Closed Vessel Microwave Digestion

WARNING

CEM will not be responsible for damage to equipment and facilities or personal injuries resulting from
microwave digestion of samples that are deemed unsuitable for closed vessel microwave digestion.

Acid decomposition of certain chemical compounds or types of samples constitutes unreasonable, hazardous
misuse of CEM microwave digestion systems. The classes of compounds listed below are unsuitable for closed
vessel microwave digestion because they are highly reactive with oxidizing acids and/or may become nitrated and
potentially explosive. Absence of a particular chemical compound from this list does not imply microwave acid
decomposition of such a sample is safe under all conditions.

• Explosives (TNT, Nitrocellulose, etc.)
• Propellants (Hydrazine, Ammonium Perchlorate, etc.)
• Pyrophoric chemicals
• Hypergolic mixtures (Nitric Acid and Phenol, Nitric Acid and Triethylamine, Nitric Acid and Acetone,

etc.)

• Animal Fats (Esters of glycerol capable of nitration and the formation of nitroglycerin or other nitrated

organic compounds)

• Aviation Fuels (JP-1, etc.)
• Acetylides
• Glycols (Ethylene Glycol, Propylene Glycol, etc.)
• Perchlorates (Ammonium, Potassium, etc.)
• Ethers (Cellosolve - Ethylene Glycol Phenyl ether, etc.)
• Lacquers
• Alkanes (Butane, Hexane, etc.)
• Ketones (Acetone, Methyl Ethyl Ketone, etc.) and alcohols (methanol, etc.)

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Содержание iPrep 12

Страница 1: ...iPrep High Performance Vessels Manual...

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Страница 3: ...and Plug Conditioning 8 Non Nitric Acid Liner and Plug Conditioning 9 Perform a Digestion Vessel Assembly 10 Turntable Setup 13 Load and perform a Method 14 Vessel Removal 14 Vessel Cleaning and Insp...

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Страница 5: ...servation or action as described below NOTE A NOTE is intended to provide emphasis of procedures that may be misinterpreted or overlooked or to otherwise clarify confusing situations CAUTION A CAUTION...

Страница 6: ...geological samples This vessel is also a great option when digesting 1 g or larger samples due to ppt detection limit needs Preinstalled methods take the guesswork out of method creation and sample pr...

Страница 7: ...250 C 250 C Hydrochloric Acid 250 C 250 C Hydrofluoric Acid 250 C 250 C Sulfuric Acid 300 C 300 C Phosphoric Acid 300 C 300 C Aqua Regia 250 C 230 C Water 180 C 180 C Maximum Sample Weight Food Plant...

Страница 8: ...ter than average and run them together Bake out liners and plugs to remove residual HNO3 NOx gases Use Bake Out procedure for iPrep vessels 210 C for 6 hrs overnight Bake out liners if TempGuardTM is...

Страница 9: ...may become nitrated and potentially explosive Absence of a particular chemical compound from this list does not imply microwave acid decomposition of such a sample is safe under all conditions Explosi...

Страница 10: ...r than original CEM parts will put operators and equipment at risk therefore CEM will not assume any liability for use of these parts and all warranties either written or implied will immediately beco...

Страница 11: ...seal Includes plug removal tool 2 Vessel Liner Holder Holds up to a set of 16 vessel liners 3 12 Place Turntable Holds assembled vessels inside MARS 6 cavity and provides rotation 4 16 Place Turntable...

Страница 12: ...safety data sheet Refer to these guidelines for proper handling and disposal of the reagents 3 Add 10 mL of HNO3 to each liner Use the acid to rinse the inside of the liner to ensure that the sample...

Страница 13: ...nse the inside of the liner to ensure that the sample is in the base of the liner 4 Wait 15 minutes to allow pre digestion 5 Assemble and torque each vessel See Vessel Assembly for detailed instructio...

Страница 14: ...weights 2 2 Add the acid 5 mL 30 mL working volume Use the acid to rinse the inside of the liner to ensure that the sample is in the base of the liner If running more than one vessel you must run sim...

Страница 15: ...nto the sleeve NOTE Invert the vessel sleeves after every test to help maintain uniformity of the liner and sleeves 6 Place the load disc on the plug with the tab on the disc facing downward so that i...

Страница 16: ...12 Perform a Digestion 8 Tighten the screw onto the top of the load disc until it is finger tight 9 Use the provided torque block and tighten the screw until a single click is heard or felt...

Страница 17: ...at the mat is not covering the iWave sensors 2 Load the empty turntable into the instrument by aligning position 1 with the front of the instrument 3 Turntable must be seated down on drive lug NOTE CE...

Страница 18: ...and reseal and restart method from the beginning CAUTION Observe the entire digestion sequence when establishing a procedure for the first time 5 Verify that vessel count type and position are correc...

Страница 19: ...ent hole pointed away from the user 4 Use the torque block to carefully loosen the vessel screws allowing them to vent 5 Remove the vessels from the frame carrier rack 6 Place the liner and plug into...

Страница 20: ...form a Digestion 8 Transfer the digested sample from liner and proceed with work up CAUTION Never pour sample or liquid from liner with sleeve in place 9 Clean vessels as outlined in Vessel Cleaning S...

Страница 21: ...P Avoid abrasive cleansers and stiff brushes which can scratch the Teflon surface 5 Clean liners and plugs using the microwave as outlined below All vessel components must be dry before use 5 1 Add 10...

Страница 22: ...e in color comparable to new liners with no acid history Turntable Frame Load Disc Screw Racks 1 Wash in hot soapy water as needed and allow to dry completely before use 2 Inspect the turntable frames...

Страница 23: ...istribution is required for optimal performance Proper spacing will eliminate hot spots issues regarding turntable balance and provide optimal temperature sensing 2 vessels 3 vessels 4 vessels 5 vesse...

Страница 24: ...mal performance Proper spacing will eliminate hot spots issues regarding turntable balance and provide optimal temperature sensing 2 vessels 3 vessels 4 vessels 14 vessels 15 vessels 16 vessels 5 vess...

Страница 25: ...e version 1 45 or higher as follows Standard Any acid mixture other than HCl or HF dominant HCl Aqua Regia or acid mixtures that are greater than or equal to 75 HCl 6 Select Hold Time and enter in the...

Страница 26: ...ve lightened in color or turned white or are flared at the ends Annually Contact CEM Service Department local CEM subsidiary or distributor for information on CEM Service contracts Bake out Procedure...

Страница 27: ...See Sample Preparation Safeguards for specific details when running acid blanks Liner not getting as hot due to leaking Pair liners with plugs that offer resistance Invert sleeves after every test to...

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Страница 30: ...de Saclay 4 rue Rene Razel 91892 ORSAY Cedex 33 01 69 35 57 80 Fax 33 01 60 19 64 91 info fr cem com Germany Austria Switzerland CEM GmbH Carl Friedrich Gauss Str 9 47475 Kamp Lintfort 49 2842 9644 0...

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