Diagonal Dimensions Two bricks of the same type are stacked face-to-face, with four corners aligned, one of them turned, and the four sides are always the same size. This method is particularly suitable for the detection of tiles with a smooth surface.
Check the flatness of the two bricks of the same species face to face overlap, four corners aligned, turning one of them, easy to turn the poor quality, otherwise it is good. This method cannot be used to detect antique tiles. The distinctive feature of antique tiles is the random change of surface color and pattern, and the surface can be uneven.
See the water absorption rate is an important indicator of tile quality. Pour a small glass of water on the back of the brick body. The faster the water disappears, the higher the water absorption rate is. The looser the texture, the weaker the strength, and vice versa.
Look at the finish This is an important indicator of the quality of polished tiles. The protective wax on the surface of the polished tile is cleaned with a soft cloth or reagent, placed under light or sunlight, and viewed at an oblique angle of 45 degrees, the brighter the surface, the better.
Tiles buy tiles antique tiles
The COVID-19 Antigen Saliva Test kit is a lateral flow immunoassay intended for the preliminary screening and qualitative detection of nucleocapsid protein antigen from severe acuterespiratorysyndrome coronavirus SARS-CoV-2which causesthe Coronavirusdisease(COVID-19),in direct saliva sample from individuals suspected of coVD-19 by their healthcare provider within the first seven days of symptom onset.The COVID-19 Antigen Saliva Test kit is for professional use only and is intended to be used as an aid in the diagnosis of SARS CoV-2 infection.
SARS-CoV-2is anenvelopedsingle-stranded RNAvirus ofthe Baenus COVD-19 is an acute respiratory infectious disease. People are generally susceptible.Currently. the patients infected bytheSARS-CoV2are the main source ofinfection:asvmptomatic infected peope car also be an infectious source Based on thecurrentepidemiologica investigation, the incubation period is 1to 14 daysmostly 3to 7 days The main manifestations include feverfatigue and drycough.Nasa congestion, runny nosesore throatmyalgia and diarhea are found in a few cases.
Results are for the identification of SARS-CoV-2 nuceocapsid protein antigen. The SARS-CoV-2 antigen is generally detectable in upper respiratory specimens during the acute phase ofinfectionPositive results indicate the presence of SARS-CoV-2viralantigenshowever cinicai corelation with patient history and other diaanostic information is key to determine status of infection.Positive results don't preclude bacterialinfection or co-infection with other yiruses.eaatveresuts To patients with symptom onset for more than seven days should be treated as presumptive and confirmation with a molecular assayand patient management may be performed according to local regulations as needed.
saliva antigen rapid test kit,antigen test saliva,antigen saliva test kit,rapid antigen saliva
Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yymeds.com