Frequently Asked Questions...Answered.
To answer your questions as quickly as possible, please review our FAQ's to see if your question is answered here. (click on the question to see the answer)
Stainless steel is an iron-containing alloy made from some of the basic elements found on earth: iron ore, chromium, silicon, nickel, carbon, nitrogen, and manganese. We use marine-grade stainless steel (known as stainless steel 304 or 18/8). Our products feature stainless steel made of 304 stainless steel (also known as 18/8). Our stainless steel has three benefits:
• It resists corrosion, rust, and flavor accumulation
• It cleans easily
• It is virtually unbreakable
• It is safe for all types of foods
Nickel forms a metallurgical bond with iron, carbon, chromium, and other elements to form stainless steel. To get nickel out, you would have to melt the stainless steel. The exterior of the metal is a thin chromium oxide that prevents the metal from rusting. Chromium is also not reactive with food and not a concern.
Nickel in the stainless steel is safe. The concentration of nickel coming off in the stainless steel is measured in the parts per million. Really, really small. According to the Nickel Institute, the most you would get from stainless steel cookware per use is about 10 micrograms. For perspective, people eat 150 – 200 micrograms of nickel per day from natural food sources. Their tests were acidic liquids boiled (think boiling cranberry juice or tomato sauce). Water is neutral; coffee is a very, very, very weak acid.
All this said, there are a few people that are allergic to skin contact with nickel. This usually occurs because people have a nickel plated piece of jewelry in contact with their skin all day. This could be an earring, watch, or necklace, and it causes a rash or redness on the skin. Even for these people eating out of stainless steel is extremely unlikely to affect them. If individuals have concerns about a nickel allergy, consult a dermatologist or allergist.
Our products are environmentally friendly because they reduce the waste of using disposable cups. If you go to Starbucks 3 times a week, you can keep 156 cups, lids, and cardboard insulators out of the landfill each year with just one of our mugs. Plus, you'll save $15!
The stainless steel parts are recyclable with most scrap metal companies. The plastic parts are not generally recyclable, but check with your local waste management agency for more information. Most of our plastic liners are AS (#7-Other) / SAN (#7-Other), and PP (#5-polypropylene). In addition, our factories recycle steel and plastic scraps from our internal manufacturing processes.
Most of our products use acrylonitrile butadiene styrene (ABS) for the exterior to create the colorful transparent and semi-transparent appearances.
Several of our products use polypropylene (PP) for parts of the products. This includes the black plastic lids of our products. Products with a black plastic liner also use PP material.
Handles are made with high-impact polystyrene (HIPS). The Tea-zer MC-3272T uses acrylonitrile styrene (AS) for the interior of the mug. Note that this is also known as styrene acrylonitrile (SAN).
Hand wash with a mild detergent. Do not put any products in the dishwasher.
You can also remove brown coffee stains from stainless steel with denture cleaner.
Dishwashing puts additional stress on the product. The rapid heating, powerful detergent, and steam may break the water-tight seals of the product.
For vacuum products, this may break the vacuum and force water into the insulation chamber. Therefore it won't keep coffee hot for long periods of time. This also violates the manufacturer's warranty. For double wall mugs, this may create condensation between the liner and the plastic.
The result is condensation and liquid on the interior of the product. You might notice a Liquid Solution product clouding over or leaking from the base after it has been dish washed.
For best care, we recommend hand-washing only. This preserves the look and performance of your Liquid Solution® product for years and years.
The stainless steel liners do conduct more heat than ceramic or plastic materials. In general, the rim serves as a reminder that the beverage is hot. Hopefully, it prevents burned tongues.
It is rare, but we have had a few complaints that the rims of our mugs become too hot. Based on biometric research, PCI understands that For reference, an MC-3984 with boiling water peaked at 113 F on the exterior stainless steel liner. The interior of the stainless steel liner peaked at 140 degrees F. The initial liquid was boiling (212 F) when entering, and the cup was room temperature (75 F) at start.
Our biometrics references show that 120 degrees F is "acceptable for prolonged contact or handling," and 140 degrees F is acceptable for "momentary contact." Individual preferences may vary from this guideline, but we view this in the context of handling a hot liquid that requires caution and reasonable judgment.
Yes. We test our materials according to Proposition 65. As of 2007, the only materials that require testing are the ceramic exteriors of our Pearl® insulated mugs. The Proposition 65 test confirms that the lead and cadmium content is below the acceptable level.
The stainless steel liners, plastic liners, plastic exteriors, and plastic lids do not contain materials or produce byproducts that require Proposition 65 testing.
Proposition 65 is a part of California legislation that requires manufacturers to label products that may contain carcinogens or chemicals that produce reproductive issues. For more information, google "Proposition 65" and view the official California government website.