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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...

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...

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...

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).

Check to ensure the procedures sent with your instrument were followed. Some possible variables that may affect your results are: General Problems: Neutral Detergent chemicals can come out of solution. Heat and stir to bring back into solution. The...

Possible Causes: (1) The level sensor has failed to detect the liquid that is in the vessel. If the vessel is full and this fault screen appears, press <STOP> to drain the fluid. You may want to capture the solution and re-use it. Refer to DELTA...

The vessel temperature has exceeded the maximum limit. Possible Causes: (1) The solution level is low in the vessel, but the level sensor is indicating full. The level sensor has two main components that work together. These components are a Level...

Possible Causes: Possible Causes: Leakage has occurred at the agitator shaft; therefore, the packing nut requires attention. See DELTA Service Procedure Agitator Packing Maintenance and Nut Adjustment (DES001). If tightening the packing nut does not...

To properly set up your instrument for the various fiber analyses, refer to the DELTA Operator's Manual sections on NDF, ADF, and Crude Fat analyses.

Possible Causes: The packing nut may be too tight. For proper tightening instructions, refer to DELTA Service Procedure Agitator Packing Maintenance and Nut Adjustment (DES001). The packing assembly may have corrosive buildup. If periodic maintenance...

Rinse water can come directly from the tap. It does not have to be distilled.

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...

Refer to Service Procedure High Blank Bag Values (DES035).

The Blank Bag Correction allows for a weight adjustment based on actions that take place during solubilization. The resulting factor increases or decreases your sample bag weight. To determine the blank bag correction, include at least one empty...

When the neutral detergent solution gets cold, some of the components will begin to precipitate out of solution. As a result, the solution will turn milky white, and particles will be floating in it. These particles can be brought back into solution...

Depending on what you are testing, refer to section ADF Analysis, NDF Analysis, or Crude Fiber Analysis in the DELTA, A200, or A2000 Fiber Analyzer Operator's Manual.

During a crude fiber or acid detergent procedure, the time frame during which samples are exposed to 100°C solution(s) is extremely important. If the Fiber Analyzer begins a procedure at a temperature higher than 20°C, the instrument will heat the...

Possible Causes: The controller needs to be reset. See DELTA Service Procedure Controller Temp Menu Setup (DES015) to determine if menu settings are incorrect and to make the appropriate changes. If the controller reset doesn't resolve the problem...

Possible Causes: The power cord is not plugged into the unit or power source. The main power switch is not turned on. One of the system circuit breakers (fuses) needs to be replaced. Refer to DELTA Service Procedure Fuse Replacement (DES025).

Possible Causes: The rinse water supply temperature did not meet method standards. This may affect results with certain samples. Make sure the water supply has a temperature of no less than 50°C for Crude Fiber or no less than 70°C for ADF and NDF...

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.

Refer to Service Procedure Insert Samples Into F58 Bags (AS032).

To minimize bag material abrasion, use the new bag suspender (as of March 2015 - Part #: F11 ). It has been redesigned to include rounded bottom points on each tray.

Bag breakage can occur when the heat sealer setting is not hot enough to ensure a good seal. Make sure each bag is sealed within 4mm of its open end. This section includes a narrow polypropylene strip that provides elasticity to the heat-sealed area...

Possible Causes: If liquid has been manually poured into the vessel before the computer communicates with the appropriate valve to fill the vessel, this fault screen will appear. Open the vessel, if the vessel is full press "Y<ENTER>" to continue the...

It is possible to follow an NDF run with an ADF run using the same sample and Filter Bag. However, samples that are high in pectin, tannins, glucans, and fructans can produce lower-than-expected ADF values when NDF was run first. This is because...

"----" indicates there has been an electrical malfunction. You will need to reset the Controller. Refer to DELTA Service Procedure Controller Menu Setup (DES015). If the "----" still shows, you will need to replace the Ascon Controller ( Part #: A09...

F57 The porosity of the ANKOM F57 Filter Bag is 25 microns. The design of the filter bag provides a three-dimensional filter matrix similar to the filtering effect of a glass crucible. The F57 Filter Bag provides equal filtration without the manual...

When the instrument is turned on, the drain valve opens to vent the vessel. If the drain open/close switch is not sensed by the computer, this fault occurs. Possible Causes: The wires on the drain valve have dislodged. Connections may have become...

Our grinding recommendation for samples to be extracted in our Fiber Analyzer is: 1 mm with a Wiley Mill 2 mm with a Cyclone Mill (such as UDY or Retsch)

Possible Causes: (1) The bag suspender is worn or not properly functioning. Refer to DELTA Service Procedure Bag Suspender Check (DES006). (2) The level sensor is not detecting the solution. Refer to DELTA Service Procedure Level Sensor (Analog)...

A "Low Pressure" error occurs when the vessel does not have at least 3 psi. Possible Causes: The lid was not tight. You do not have to over-tighten the lid, but it needs to be snug. Usually finger tight plus 1/4 turn is adequate. Check the lid O-Ring...

Possible Causes: The solution temperature has exceeded the maximum limit. Perform the boil test detailed in the DELTA Service Procedure Boil Test (DES013).

Test the rinse water with litmus paper during the last minute of the fourth hot water rinse. If the test indicates the presence of acid, repeat with fresh, hot water until a neutral pH is achieved.

Neutral detergent consists of varying amounts of 4 dry chemicals and triethylene glycol. If you remove only a portion of the dry chemicals to make less than 20L of solution, it is impossible to know if the solution has the correct ratio of chemicals...

Amylase is utilized to help digest the starch in the sample. Even using expired Alpha Amylase, it is highly likely the non-starch components, as well as most of the starch, are gone. Put the Filter Bags in a 1 L beaker with 80 °C water and 8 ml of...