Art Pottery

Fine Porcelain

Delicate Fine Porcelain Vase White Gold accents Germany $6.50

ANTIQUE FINE PORCELAIN LARGE METZLER ORTLOFF BOY AND DUCKS UNIQUE L@@K $40.00

Original Unique Signed Handbuilt Porcelain Lg. Bowl by Ceramic Artist Jamie Fine $99.99

ALPINE FINE PORCELAIN CZECH DESIGN 24 K GOLD Coffee Pot $120.00

2 Fine porcelain full lace Candy Dish, Germany MINT $22.99

Beautiful Vintage Kaisar Signed West Germany Fine Porcelain Bunny Rabbit EUC NR! $9.99

Fine Pair Dou Cai Porcelain Cups * LaoHanTongZi* $189.00

Fine Thomas Bavaria Alt Brabant Gold Trin Handled Porcelain Floral Boquet Bowl $16.64

Vintage Gebruder Heubach Fine German Porcelain Figurine Girl with Pail $50.00

Crystalline Pottery Hand Made Unique Studio Ware British Art Fine Porcelain $41.03

Victoria Austria KARL LUSSENY Painted Plate FINE PORCELAIN. $18.96

Fine Porcelain Two Birds on Branch Italy/ Blue Flowers need repair/Collectible $0.99

Vintage 1970′s Set of 59 Fine Porcelain Minh Long I Figurines in Original Box $9.95

SIEGER FURSTENBURG GERMANY FINE PORCELAIN CUP VESSEL Gold Trim $55.00

Clipper Ship Cup Mug Fine Porcelain #6701 ***NICE*** $12.99

Louis Lourioux France “Le Faune” Fine Porcelain Serving Tray $9.99

Unique Gifts-Pottery-Clay-Fine Art-Studio-Pots-Handmade-Porcelain-Raku-Orkney $26.81

NAPOLEON FINE PORCELAIN ITALY FLOWER~~THE ROSE~~ $22.88

IMARI STYLE PORCELAIN PLATTER 14″ BOHEMIA EPIAG ROYAL EMBASSY 1920S FINE MINT $79.98

Vintage German MADE RETICULATED FULL LACE FINE PORCELAIN CANDY/DESERT PLATE $9.99

Jay Porcelain Ginger Jar with Lid Fine China Birds and Poppies $14.99

SIMPLY GORGEOUS 1940s RUNNING STALLION HORSES PR W BASE FINE Japan Porcelain NR! $9.99

Vintage Original beaufort Chinese Porcelain Shoe Shape ASHTRAY fine Bone China $99.00

CYBIS FINE AMERICAN PORCELAIN FROLLO THE JUGGLER CLOWN FIGURINE $350.00

CYBIS FINE AMERICAN PORCELAIN NANCY & NED SLEDDING SNOW SCENE 1978 FIGURINE $295.00

CYBIS FINE AMERICAN PORCELAIN JUMBLES & FRIEND CLOWN with DUCK 1985 FIGURINE $495.00

A fine SAMSON OF PARIS Porcelain HP FIGURINE BOY with DOG C late 1800′s $14.99

A fine LIMOGES Hand Painted Porcelain COMPORT DISH c1900′S $14.99

Bavarian Fine Porcelain Decorative Plate 11 1/2 Fluying Ducks scene $32.99

ROYAL DUCHESS Fine PORCELAIN China Floral Tea Cup and Saucer Plate GERMANY $19.95

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Choosing a Fine Bubble Diffuser – Disc Diffuser – Tube Diffuser or Panel Diffuser?

Diffusers are available in many shapes, including discs, tubes, squares, and rectangular panels, and in different materials, including elastomers like EPDM and porous media like Aluminum Oxide, Porcelain, or HDPE. Many books and papers have been written on the differences between these media.

However there are still many questions about the superiority or application of disc vs. tube vs. panel. Many of the manufacturers in the business make multiple types of diffuser, though they tend to favor and promote one moreso than the others, typically for commercial reasons (they have a higher margin on one product) or for reasons of product differentiation (when specified by a client or engineer, it is difficult to find “equal” competitors).

Many tests of oxygen transfer efficiency have been carried out over the years on each type of diffuser (some of which are published in the ATV Handbuch), however product development is dynamic, and what was tested in the mid 1980′s may not apply today to modern discs, tubes and panels.

There are some common sense principles to follow, regardless of the development of the technologies.

In a retrievable system made of costly stainless steel, the diffuser which can handle the most air with the least stainless infrastructure is going to be an attractive choice. Typically tube diffusers are seen on retrievable systems for this reason.

In a fixed system where the pipes are bolted to the floor, and longevity and low maintenance are required, disc diffusers are more popular than tubes.

Where failure mode is important (i.e. catastrophic vs. slow) disc diffusers may be favored over tubes. Tube diffusers typically have a large air orifice, hence in case of a membrane rupture or clamp failure, a large volume of air can escape from that orifice, starving the rest of the system.

The deeper the tank, the less benefit panel diffusers offer in terms of efficiency. Panels are typically designed to produce very fine bubbles. In a shallow tank, this is a benefit, albeit a costly one since panel systems often carry a hefty price tag due to the amount of equipment required to purchase and install. However in a deeper tank, so much of the oxygen is transferred by the time the bubble has risen 15 ft that the bubble is said to be oxygen depleted, hence the benefit disappears. One must also be cognizant of the headloss of panel diffusers, since what is gained in terms of efficiency from small bubbles is often lost in extra energy needed to overcome the high back pressure of panel membranes.

Regardless of the type of diffuser, one should consider PTFE coated membrane diffusers, which may extend the lifetime of the membrane and will also reduce surface fouling as well.

About the Author

Stamford Scientific manufactures a number of quality fine bubble diffusers, membrane diffusers, and aeration systems. Wastewater management systems and sewage treatment plant options available.

Anybody know what to use to clean porcelain and fine china?

I have two figures of beautiful horses, one on one on fine china porcelain. Both need cleaning, but can not find a good cleaner to use security. Google search for a product, but no luck. Can anyone help please? Thank you all.

Yes, I would agree with a washing liquid and hot water. To avoid chipping, putting towels on the rack, soak the items for a time, rinse thoroughly with clean water and vinegar and then lift out onto the towel and just let it dry.