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Replacement of the dryer completely depends upon how often it is used to dry hydrolysis samples. The filter should be changed when the filter bags do not dry sufficiently after hydrolysis at 110°C for three hours (adding pH paper in the desiccant...
When using the ANKOM Rapid Dryer to dry acid hydrolysis samples, the airflow through the special hydrolysis filter ( Part #: RD2 ) will eventually become too limited and the filter will need to be changed. To check the air filter for proper airflow...
When samples are dried for three hours after hydrolysis, they should be placed in a desiccant pouch ( Part #: X45 ) with a strip of pH paper. When the bags are fully dry, the pH paper will NOT show the presence of acid.
This can occur with samples that are very low in fat. Moisture left in low-fat samples after extraction is the issue. As AOCS Procedure AM 5-04 indicates, when the Filter Bags are removed from the Extractor, they should be placed in an oven at 100...
You can see unexpectedly high values when hydrolyzing fat samples if the samples are not adequately dried after the hydrolysis step. Possible reasons for insufficient drying include: (1) Dryer is not working properly - Filter needs to be replaced -...
Possible Causes: (1) The vent tube or drain tube is blocked. The blockage is caused by water trapped in the line. It is very important that the vent and drain tubes run downhill and are not submerged in water. If the vent tube is blocked, a vacuum is...
Possible Causes: (1) The dial on the heat sealer may not be turned up high enough. To seal the XT4 Bag, the dial must be set at approximately "6." (2) The heating element is broken. On the sides of the Teflon cover are two shiny metal strips that...
This analysis can be performed using the older Kjeldahl Method with filter bags. The automated combustion instruments (Dumas Method) can also be used. With some of the automated instrumentation, it may be difficult to get the entire filter bag into...
First, make sure that your Daisy is not placed under an Air Conditioner or fan. Check your Daisy instrument bulbs, controller, and temperature probe to ensure they are functioning properly. With further questions or concerns, please contact ANKOM...
When the lid is raised, some residual acid may flow onto the hinges and the handle. Over time, corrosion will occur if this happens. When lifting the lid after a run, it is recommended that the lid be wiped off with a paper towel to prevent dripping...
If a Mojonnier solvent (pet ether, ethyl ether, ethanol) is utilized, a blank value of 0.0030g is normal. If pet ether or hexanes are used, a blank value of 0.0010g is normal. During the hydrolysis phase, fat migration may occur with samples that...
When the rotation switch is activated on the Daisy, the jars should continue to rotate until the switch is turned off. Possible Causes: There is not enough friction between the outside surface of the jars and the rollers on the instrument. This is...
Contact ANKOM Technology via e-mail at https://www.ankom.com/contact/technical-services or by calling 1-315-986-8090 for assistance in making this determination. Follow D200 Service Procedure 1 to replace the motor on the Daisy instrument.
The F57 and F58 Filter Bags are ash-free and therefore can be used for ash determination. Refer to the Ashing Procedure Service Procedure (AS034) linked below.
Possible cause: A power surge has occurred. Solution: Reprogram your controller using the controller menu setup in your Operator's Manual
Possible Causes: 1) Sample size is too large. 2) Bags were not acetone rinsed. 3) The rubber baffle spacers fell off. Possible Solutions: 1) Ensure that the procedure is followed completely. 2) Reduce sample size to .025 per procedure. 3) Rinse bags...
Possible Causes: (1) The dial on the heat sealer may not be turned up high enough. To seal the XT4 Bag, the dial must be set at approximately "6." (2) The heating element is broken. On the sides of the Teflon cover are two shiny metal strips that...
The MoistureStop Desiccant Pouch is a small, airtight zipper bag, utilized for desiccating all of the Filter Bags that are used with ANKOM instrumentation. A single pouch can hold a full run of F57, F58 or XT4 bags at one time. When folded, 6 IDF or...
The F57 Filter Bags should not be oven-dried after the acetone treatment. Doing so can release the calendared set (heat and pressure used to flatten) we put on the filtration media from which the bags are made. Simply allow the acetone to completely...
To determine how much DE to use with various sample types, refer to the Hydrolysis Procedure subsection titled Sample Categorization of the HCl Operator's Manual.
To perform an extraction of oilseeds, refer to Oilseed Extractions (FOSFA Equivalent).
Research with high fat samples has given us the following understandings: Some samples with fats that have low melting point triacylglycerides or emulsifiers may encounter fat migration during hydrolysis. To improve fat retention, increase the level...
Some samples with large amounts of carbohydrates (starches and cellulose) may bind small quantities of solvent and require additional post drying. To remove the bound solvent, dry at 100-105° C for one to three hours.
The Overtemp message happens when the ANKOM HCl Instrument is heating but there is no solution in the vessel. The quartz heaters will heat the vessel and the ETS (Emergency Temperature Switches) will trip. Possible Causes: The instrument was not...
View the HCL Periodic Maintenance video .
To understand how to mix DE with various sample types, view the How to mix DE with samples video.
In developing our hydrolysis process, we did extensive research into acid and base hydrolysis. We found that the acid hydrolysis did well with a variety of samples, including those normally hydrolyzed in a base solution, i.e., dairy products. As a...
High Fat Samples are defined as any meat sample with a fat content >20% and any plant sample with a fat content >40%. See XT Service Procedure High Fat Sample Handling (XTS014).