Does this product have an expiration date?

This product has a printed expiration date of 36 months from the date of manufacture.

Do dust wipes expire and why?

The GhostWipe is packaged with enough deionized water on the wipe to properly collect dust from the surface to be wiped. The expiration date is to guard against loss of water through the packaging.

What is the recommended Digestion conditions for complete digestion of the Wipe (i.e., Temperature, Acidic Content, Acid Identity)

We recommend following methods designed for the analysis of residue on wipes, such as ASTM E-1664. We have a version of that method scaled to fit in our HotBlock in the HotBlock user manual. The manual can be downloaded at http://www.envexp.com/product-manuals.

Are ghost wipes sterile/lint free?

The GhostWipe is not a sterile material. The dry GhostWipe may leave lint behind when wiped on a surface. The pre-moistened ones are intended to collect surface particulates and does not leave any lint behind.

Why is there an expiration date on the package? What if I use \'expired\' wipes?

The GhostWipe packaging contains DI water to keep the wipe damp. This allows it to pick up dust particles on the surface being sampled. The expiration date pertains to the DI water and the package integrity. Using a product after the expiration date would be the same as using any other reagent after a listed expiration date. It may be possible to achieve accurate results but they would be called into question due to the listed expiration date having passed.

Can ghost wipe SC4250 detect fire soot in the pores of travertine pavers 1 week and 8 weeks after the fire

The GhostWipe does not have any detection or analytical properties. It is merely a wetted material that can pick up dust sized particles from surfaces. The wipe and collected particles must be analyzed via additional methodology specific to the targeted compound(s).

Concentrated Nitric Acid digestion - are the wipes suitable for conc nitric acid digestion with heat? as in the MSDS it states incompatible with nitrates?

These wipes are suitable for use with nitric acid digestion. The SDS incompatibility is only in reference to the storage of the product. Exposure to oxidizing agents will cause a decomposition of the wipe material, rendering it unsuitable for use.

what size do the wet wipe come in?

The GhostWipe measures 15 cm x 15 cm.

Do GhostWipes have an expiration date?

Yes, they do have an expiration date. The shelf life is 36 months from the time of manufacture. The expiration date for each wipe is embossed on the edge of the wrapper.

Hello, do GhostWipes have expiration dates? Thank you!

Yes, GhostWipes do have an expiration date. The expiration date is the date up to which we certify that the GhostWipe will retain its wetness in its packaging. It is embossed on the edge of each individual packet of GhostWipe. You may need to use a pencil to color the embossing to make the date more visible.

Are GhostWipes are for dust only? E.g. If I have a painted surface which is not degraded (no flaking, etc), even if it\'s lead paint, GhostWipe should not detect lead, correct?

The GhostWipes are for surface testing. If there is any loose material, even what might not normally be considered large enough to be ‘dust’, it will get picked up on the GhostWipe. A positive result in the circumstance you describe indicates that the lead in the paint is mobile and can potentially be transferred through surface contact.

What digestion method/procedure is recommended for digesting Ghost Wipes? Is a simple nitric acid digestion adequate or should aqua regia be used?

Please visit our Product Manual Download page and download the file ‘HotBlock Manual 08.2016.pdf’. In it you will find a procedure that outlines the digestion of GhostWipes.

What is the ghost wipe made of and moistened with? Is it safe for a nursing mother to handle the wipe itself? Are the wipes themselves non toxic?

GhostWipes are made of polyvinyl alcohol and are moistened with Deionized Water. They are non-toxic and safe for everyone to handle prior to sampling.

Can ghost wipes be used after the expire date if still wet?

The expiration date is the date up to which we certify that the GhostWipe will retain its wetness in its packaging. The wipes may retain their wetness past this date depending upon storage conditions and other factors. You can use them past the expiration date as long as they are still wet and if you don’t have to worry about an auditor citing you for using them.

Are expired wipes still good to use?

The expiration date is the date up to which we certify that the GhostWipe will retain its wetness in its packaging. The wipes may retain their wetness past this date depending upon storage conditions and other factors. You can use them past the expiration date as long as they are still wet and if you don’t have to worry about an auditor citing you for using them.

Why do Ghost Wipes have an expiration date?

The expiration date is the date up to which we certify that the GhostWipe will retain its wetness in its packagaing.

Can ghost wipes be used for PCB analysis?

The GhostWipes are made of a polyvinyl alcohol. Therefore, when digested and analyzed, you will see isopropanol and related alcohol peaks. As long as your Aroclor/PCB does not elute around the same time as the alcohols, then you should be good. You can always run a blank GhostWipe and see its contribution to your chromatograph.

How much DI water do you use per wipe? (for dilution calculation)

Each wipe contains between 3.2-3.5 grams of DI water.

How much does a 15 cm x 15 cm ghost wipe weigh?

The GhostWipes come premoistened with DI water in their packaging. Out of the packet a GhostWipe typically has a mass of 4.5-5.0 g. A dry GhostWipe will be 3.5-4.0 g.

Can Ghost Wipes be used to sample a wall for asbestos?

The GhostWipe is not compatible with the current methods of counting fibers to detect asbestos. The wipe has its own fiber contribution and has not been evaluated in conjunction with the procedure for asbestos analysis.

can ghost wipes be stored in area where temperatures fall below freezing

We do not have any specific storage requirements for the GhostWipe. Make sure that the wipe comes back to above freezing before use. This will ensure that the DI water packaged in the wipe will properly moisten the material to pick up the intended particulate material.

What are effective solutions and methods for disolving ghost wipes?

The GhostWipe was designed to be used with ASTM E1792. This method calls for a heated acid digestion. NIOSH method 7082 is also used in digesting wipe samples. This method also uses a heated acid digestion. An adaptation of this method can be found in the HotBlock manual.

What is the country of origin of the ghost wipes? I need to know because we are working in Canada and customs requires this information. Thank you.

The GhostWipe originates in the USA.

Do ghost wipes meet ASTM D7707 specifications?

The Beryllium GhostWipe, SC4250BE, meets the specifications set forth in D7707.

how much does a GhostWipe weigh?

One dry Ghostwipe has a mass of 1.0-1.1 g.

Are the Ghost Whipes made in the USA?

Yes, the GhostWipes are made in the USA.

Can i use ghost wipes to clean my furniture as regular cleaning wipes?

Depending on the desired results these wipes may be of limited use in cleaning purposes. The wipe is moistened with DI water to facilitate the collection of loose particles on surfaces. It could potentially leave behind water marks on wood and does not have any special cleaning properties.

Can the ghostwipe be used to test a sulfuric acid tank for metals and cyanide?

The GhostWipe is designed to be used for dust sampling on surfaces for lead and beryllium. We do not test the wipe for the presence of any other contaminants. Some users have reported success in using the wipe for other metals. To do so, you would need to check each lot of wipes for background levels of your analytes of interest. Take as many wipes as you need for a good statistical evaluation (a minimum of 5-7 is recommended) and analyze them individually as blanks. Average the results of the contaminants that you have an interest in and use that as a background correction for future analyses with that lot. I do not know if cyanide will be adequately captured using the wipe procedure. The tank wall conditions will also affect the stability of the wipes. Depending on the amount and strength of acidic residue left on the inside of the tank you may experience some degradation of the wipe.

do the ghost wipes have an expiration date? SC4250

The GhostWipes have an expiration date of 2.5 years (30 months) from the date of manufacture.

Can we use the Ghost Wipe to collect for Cr6 analysis? OSHA has stated that these should not be used for this anaysis.GW is not made up w/MCE fibers? MSDS doesn\'t show this

The GhostWipe is intended for use in lead and beryllium testing. As such, these are the only two metals for which we do background testing and issue certifications of cleanliness. If you wish to test for other materials it would be your responsibility on a per lot basis to test and decide if the GhostWipe would provide an appropriate level of detection for you. We have had other customers report successful use of the GhostWipe for other metals, including chromium. If your local authorities state that they are not appropriate for what you want, there is not much we can do to counter that. The wipes are made of polyvinyl alcohol and do not contain MCE.

are the checmicals on the wipe safe on human skin ? Can you use them on face and hands as a sanitizer ?

The Ghost Wipes are pre-moistened with deionized water which is certainly safe for contact on human skin. There are no other chemicals in the solution.

Do you have a question?

Email me the answer?