Do the graduations on the side meet \'Grade A\' glassware tolerances

Yes, they do. We test this product the same as the other 50-mL digestion vessels that we offer. They will come with a lot number that you can use to find the volume study data here -

I see iron contamination as up can have upto 24 ppb of iron contamination? Or is 25 ppb just the detection limit for the method used to certify these lots.

We guarantee every cup to have a level of less than 25 ppb for Fe. The cups may contain levels much less than that, but that is the lowest level for which we certify our Ultimate Clean Cups.

like to try your new cup..can you send a couple to try

Unfortunately, we do not send samples of this product. This product is packaged in a certain way that allows it to maintain the low background metals levels. Our packaging doesn’t allow for samples to be sent.

Do the ultimate clean cups, UCC000-50, come with caps.

Yes, the Ultimate Clean Cups come with the caps screwed on already to preserve the low-metals background.

could you tell me the exact dimensions of the cups ( diameter and height)? Thank you!

This product has a diameter of 30.3 mm (1.19\"), a height of 106 mm (4.17\"), and a total volume of 63 mL.

Do the filtermate filters fit these cups?

Yes, the FilterMates do fit the Ultimate Clean Cups.

You say the reflux cap has shown equal reflux to the ribbed watch glass. Does that mean you can use the cap in place of the watch glass for all parts of each methods?

That is correct. The reflux cap is designed to give reflux equivalent to what is generated by a watch glass. The added benefit of the reflux cap is that the opening allows the user to add digestion reagents throughout the process without removing the cover.

do you sell just the temperature probe with Nist certification?

The part number for the temperature probe is SC980A. The part number for the Thermometer Adaptor/PTFE holder is SC980B.

Is there anyway to purchase the PTFE holder for this individually without the probe?

Yes, you can purchase this part individually. The part number is SC980B. It is not published to our website so you won’t be able to find it there.

What is the difference between Cat # UC474-WH and Cat # SC475-CW ?

They are the same cap.

The Cat # UC474-WH can be used with SC475 Cups?

Yes, the UC474-WH caps can be used with SC475 cups. We also have the UC475-WH, which is our Ultimate Cup with white caps. The Ultimate Cup is an improved SC475.

Can I order just the green caps for the SC475 digestion vessels? What is that part number and quantitiy?

The green caps are available for order. The part number is UC474-GN. They are available in a case of 500.

In the cardboard box are all tubes in 1 large plastic bag, like SC475, or perhaps smaller bags each with some portion of tubes and caps? Thanks. I should\'ve probably emailed my sales rep. :-)

The Ultimate Clean Cup (UCC000-50) will come in a box of 150 cups which are packaged in 6 individually wrapped trays of 25 cups each.

What is the difference between the UCC000-50 and the UC-475?

The Ultimate Clean Cup (UCC000-50) is an Ultimate Cup (UC475) that has been handled in a way to avoid common means of contamination and packaged to ensure that it arrives ready to use in any clean environment setting. On average, the Ultimate Clean Cup is 2-10 times lower in background metals contaminants than the Ultimate Cup.

Is it class A? I am something looking for class A digestion cups 50 ml which can be digested in acid medium in 120 degree centigrate for 1 hour . Do you have something like that?

These vessels are tested for volume accuracy at all graduation lines by the procedures set forth in ASTM E542-01, Standard Practice for Calibration of Laboratory Apparatus. Volume accuracy is found to be within the Class A tolerance set forth in ASTM 1272-02, Standard Specification for Laboratory Glass Graduated Cylinders. However, glassware, not plastics, are Class A certified. We do not sell Class A certified digestion vessels.

What material is the green cap made of? I need this information for recycling purposes.

The cap is made of polypropylene with a polyethylene-faced liner.

We are seeing higher than normal Al in the new UC475GN 50 mL digstion vessels (over our RL) . I know the analysis is>50ppb. Do you have a COA for Al in SC481 cups?. Thanks.

SC481 is molded from a resin that comes from the medical field. We do not send certificates with this cup because our lowest detection levels are shown on the SC475 certificate. We have anecdotal evidence that the SC481 is cleaner but we do not yet have a way to quantify how much cleaner it is.

I was wondering what\'s the difference in your caps? Clear is linerless, but the white and green ones have a liner. Do they have a difference in the tightness of fit?

The natural, linerless caps extend the entire length of the neck, while the other two do not. All three caps basically have the same fit with the cup. The natural cap is made from the same polypropylene resin as the cups themselves and have the same background metals levels as stated on the COA.

What is the max temperature for UC475-WH - Ultimate Cup - 50mL?

These cups are molded from polypropylene which has a maximum operating temperature of 130°C. At this temperature, the polypropylene begins to soften and deform.

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