DYE-HOUSE COLOR AUDITING QUESTIONS

DYE-HOUSE COLOR AUDITING QUESTIONS
Dye-kitchen
Is the dye kitchen fully automatic?	NO
Are the scales, scoops and all measuring cleaned between uses?	Yes
Is the temperature maintained within a range of 10-29C?	Yes, under maintenance
Are all raw material containers sealed when not in use?	Yes
Is there any fly-dye in use?	No
Is the dye-kitchen atmosphere conditioned?	Yes
Are the temperature and humidity recorded on a daily basis?	NO
Is the dye dissolving or dispersing tank equipped with variable speed agitation and capable of heating?	Yes
Is dye automatically dispensed from the bath preparation area into dye machinery?	NO
Are SOP's for operation of the dye make-up tanks posted in sight of workers?	Yes
Is a software program used to calculate production dye-bath recipes?	Yes
Are weighing results of dyes and chemicals documented?	Yes
Are dyes dissolved/ dispersed according to the supplier's reccommendation?	Yes
Is the pH of the prepared reactive dye solution between 6-7?	Yes
Is an automated dye dispensing system for production dye machinery in place and operational?	No
Are different scales used for different weight ranges?	Yes
Are all scales maintained under a service contract?	NO
Do all scales receive periodic preventative maintenance?	Yes
Are all scales calibrated at least twice annually?	Yes, once  in a year
Does the mill document a list of all auxiliaries in inventory?	Yes
Lab Equipment
Is the dye lab an enclosed room, completely seperated from adjoining space by walls and a ceiling?	Yes
Is the dye lab a completely seperated from where the greige goods are stored?	Yes
Is the temperature in the testing lab maintained at 22 C?	Yes
Is the relative humidity in the testing lab maintained at 65 %+-5%?	Yes
Are scales in use with the appropriate precision?	Yes
Are Class A , calibrated to contain (TC) volumetric flasks or beakers in use?	Yes
Are Class A , calibrated to deliver (TD) volumetric pippettes in use?	Yes
Is precision lab dyeing equipment for all in production processes in place and operational?	Yes
Is an automated laboratory dispensing unit in place?	Yes
Lab Procedures
Are chemicals and auxiliary amounts used according to the manufacturer's recommendation?	Yes
Can the lab recipe taken 1:1 in production?	Yes
Is there a procedure for polyester/cellulose blends to "burn out'\' the cellulose portion, so that polyester skeleton can be evaluated?	Yes
Are SOPs available for all laboratory dyeing processes?	Yes
After how many days is the stock solution renewed?	24 hrs.
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Are highly diluted dye solutions made by diluting higher concentration solutions?	Yes
Is color formulation software used to match colors?	Yes
Are at least 6 concentration of dye primaries used for each dyestuff?	4 concentration
Have sets of dye primaries created for different fabric constructions?	Yes
When formulating dye recipes , is metamerism considered?	Yes
When formulating dye recipes, are affinity and substantivity considered?	Yes
Does a procedure exist for shade correction?	Yes
Is metamerism considered in shade correction?	Yes
Is recipe correction done by using a software?	Yes
If a chemical finish is applied to a fabric in production, is it also applied in the lab?	Yes
If a mechanical finish is applied to a fabric in production, is it also applied in the lab?	NO
Are steps taken to check lot to lot consistency of the substrate by test dyeing?	Yes
Are prepared goods checked for wettability?	Yes
Are prepared goods checked for pH?	Yes
Are prepared goods checked for whiteness?	Yes
Does the mill test new lots for each dyestuff?	Yes
Is recipe correction accomplished systematically with software?	Yes
Is the lab's total monthly capacity documented?	Yes
What's the average number of recipe trials per color to achieve a match?	3 trials.
Conditioning
Is a conditioning cabinet present and operational?	Yes
How many minutes are required to fully condition samples in the conditioning cabinet?	30 mins
Is the temperature in the cabinet set to the specifier's requirement?	Yes
is the cabinet maintained under a service contract?	NO
Is the cabinet equipped with an interior light?	Yes
Does the cabinet receive periodic service?	Yes, In-house
Spectrophotometer
Does the mill use an approved spectrophotometer?
X-Rite   …
Datacolor	Yes
Minolta
Other
Are all the spectrophotometers maintained under a service contract?	Yes
Do all spectrophotometers receive periodic maintanance such as cleaning and inspection?	Yes
Does the mill use an approved spectrophotometer profiling software package?	Yes
Guardian( Datacolor)	Yes
Net Profiler( X-rite)
Mapping( archroma)
No profiling software package
Is every spectrophotometer in the facility profiled/ correlated?	Yes
Is the spectrophotometer setting according to the retailer's specification?	Yes
According to which method is your spectrophotometer calibrated for white?
Not UV Calibrated
UV D65/10( CIE Whiteness) AATCC textile reference
UV D65/10( Ganz Griesser) Hohenstein textile reference
Other	yes
Is a valid textile calibration standard available?	Yes
Light Cabinets
Is each light booth clean including the interior, diffuser lens and bulbs?	Yes
Is the interior of each lightbox painted with the supplier's original grey paint?	Yes
Does the mill has light booths that include the specifier's ( retailer) required light sources?	Yes
Is each light booth covered under an annual service contract?	on process
Do the illuminants in the light box correspond to the markings on the switches?	Yes
Does each light booth receive periodic preventative maintanence?	Yes
Does each light booth have a list showing the light tube/bulb replacements dates?	Yes
P. Equipment
pH meter
Are pH meters in use and operational?	Yes
Do the pH meters support a three point calibration?	Existing 2 point supported
Does a calibration schedule exist for the pH meters?	Yes
Are the pH meters maintained under a service contract?	No
Are pH electrodes changed when calibration is no longer possible?	Yes
Maintenance
Does in- house maintenance capability exist for the lab dyeing equipment?	Yes
Does the lab dyeing equipment receive periodic preventative maintenance?	Yes
Does in-house maintenance capability exist for production dyeing equipment?	Yes
Does the production dyeing equipment receive periodic preventative maintenance?	Yes
P.Equipment
Does the machine allow different flow directions?	Yes
Is data available concerning pump capacity?	Yes
Is differential pressure monitored?	Yes
Are lint filters for the machines cleaned regularly?	Yes
Are the temperatures indicated by the production machinery correct?	Yes
Is a non-contact in line spectrophotometer for continuous measurement operational and in place?	NO
Water
Is soft water used?	No
Is water hardness and pH tested every day?	Yes
Does the mill document water analysis?	Yes
Does the mill test for Copper(Cu), Chromium(Cr), Iron (Fe) ?	Yes
Production Procedures
Is metamerism considered for shade correction?	Yes
Are there documented recipes for scouring, bleaching and mercerising?	Yes
Are the programs of pretreatment standardised?	Yes
Are synthetic or lycra/spandex containing greige goods heat-set before dyeing?	Yes
Does the Mill check PA qualities for barriness with a dyeing test?
Does the Mill use acid donor systems to control pH?	Yes
Does the Mill record liquor Ratio?	Yes
Does the Mill know the accurate weight of fabric/yarn to be dyed?	Yes
Does the Mill control dyeing process with computer?	Yes, Partial
Does the Mill test the dyebath salt concentration?	Yes,
Does the Mill check residual peroxide on bleached textile?	Yes,
Which fibers are dyed?	Cotton, Polyester, Linen, CVC, PC. PV.PVC, Viscose, Siro, Sorona, Inject etc.