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formalin ethyl comparison

Comparison of formalin-ethyl ether sedimentation, formalin ...

"Formalin-ethyl ether sedimentation, formalin-ethyl acetate sedimentation, and zinc sulfate flotation techniques were compared using over 250 clinical parasitology specimens. Fifty positive specimens were identified, and a variety of parasites, including amoebae, flagellates, cestodes, nematodes, and trematodes, were encountered. The formalin-ether and formalin-ethyl …

Clinical comparison of ethyl acetate and diethyl ether in ...

A substitute for the volatile solvent diethyl ether has been actively sought for the Formalin-ether sedimentation technique. Ethyl acetate has recently been shown to be a comparable substitute. In an effort to verify these findings and evaluate ethyl acetate under clinical conditions, comparison stu …

(PDF) A Coprological Diagnostic Comparison Between Zinc ...

Comparison of formalin-ethyl ether sedimentation, formalin-ethyl acetate sedimentation, and zinc sulfate flotation techniques for detection of intestinal parasites Article Jun 1981

Comparison of the Quantitative Formalin Ethyl Acetate ...

Comparison of the Quantitative Formalin Ethyl Acetate Concentration Technique and Agar Plate Culture for Diagnosis of Human Strongyloidiasis May 2005 Journal of …

Compare Different Formaldehyde Production Processes

Compare Different Formaldehyde Production Processes. As a Formaldehyde Production Plant, let me share with you. We have noticed that the iron oxide formaldehyde production process is a more effective way to produce formaldehyde from methanol. However, in addition to the cost of raw materials, plants using the silver catalyst process may reduce ...

(PDF) Comparison of Three Parasitological Stool ...

Aims: The objective was to compare the sedimentation spontaneous in tube technique (SSTT), the direct smear, the zinc sulfhate (surface film and sediment analyzed) methods with the formalin-ethyl ...

Formalin-ethyl acetate concentration, FLOTAC Pellet and ...

The aim of this study was to compare formalin-ethyl acetate concentration and FLOTAC Pellet techniques for the diagnosis of intestinal parasites in human stool samples. The anal swab method was used for the specific detection of Enterobius vermicularis. The study was performed in children and youth from Puerto Madryn (South Argentina). A total of 174 …

Comparison of 2 centrifugation procedures in the formalin ...

A comparison between the standard formalin-ethyl acetate (FEA) stool concentration procedure (centrifugation at 400 g for 2 min) and a modification proposed to increase the recovery of Cryptosporidium oocysts (500 g for 10 min) was performed on 73 formalin-preserved stool specimens known to be positive for Cryptosporidium.False-negative results were obtained with …

Comparison of CONSED™ and Formalin-Ethyl Acetate Methods ...

(Only one was a pathogenic species.) On one specimen, Enterobius vermicularis was found on formalin-ethyl acetate and not on CONSED. In 37 specimens, parasites were found in the CONSED method, but not in the formalin-ethyl acetate method (15 were pathogenic). The specific parasites found were especially important in a comparison of the two methods.

Comparison of formalin-ethyl ether sedimentation, formalin ...

Comparison of the FeKal CON-Trate system with the formalin-ethyl acetate technique for detection of intestinal parasites. The ability of the FeKal CON-Trate system (Trend Scientific, Minneapolis, Minn.) to recover parasite ova, cysts, or larvae from 300 fecal specimens was compared with that of the Formalin-ethyl acetate sedimentation technique. One hundred stool …

CDC - DPDx - Diagnostic Procedures - Stool Specimens

Decant supernatant. Add 10 ml of 10% formalin to the sediment and mix thoroughly with wooden applicator sticks. Add 4 ml of ethyl acetate, stopper the tube, and shake vigorously in an inverted position for 30 seconds. Carefully remove the stopper. Centrifuge at 500 × g for 10 minutes.

Comparison of the FeKal CON-Trate system with the formalin ...

Comparison of formalin-ethyl ether sedimentation, formalin-ethyl acetate sedimentation, and zinc sulfate flotation techniques for detection of intestinal parasites. J Clin Microbiol. 1981 May; 13 (5):882–884. [PMC free article] Young KH, Bullock SL, Melvin DM, Spruill CL. Ethyl acetate as a substitute for diethyl ether in the formalin-ether ...

Comparison of clinical results for the use of ethyl ...

Comparison of formalin-ethyl ether sedimentation, formalin-ethyl acetate sedimentation, and zinc sulfate flotation techniques for detection of intestinal parasites. Truant AL, Elliott SH, Kelly MT, Smith JH. J Clin Microbiol, 13(5):882-884, 01 May 1981 Cited by ...

Comparison of 2 centrifugation procedures in the …

A comparison between the standard formalin-ethyl acetate (FEA) stool concentration procedure (centrifugation at 400 g for 2 min) and a modification proposed to increase the recovery of Cryptosporidium oocysts (500 g for 10 min) was performed on 73 formalin-preserved stool specimens known to be positive for Cryptosporidium.False-negative …

Comparison of the quantitative formalin ethyl acetate ...

The quantitative formalin ethyl acetate concentration technique (QFEC) was compared to agar plate culture () for the detection of Strongyloides stercoralis larvae. QFEC could substitute for only when the parasite load was higher than 50 larvae per g of stool. This study serves as a …

Comparison of the Quantitative Formalin Ethyl Acetate ...

The quantitative formalin ethyl acetate concentration technique (QFEC) was compared to agar plate culture () for the detection of Strongyloides stercoralis larvae. QFEC could substitute for only when the parasite load was higher than 50 larvae per g of stool.

Clinical comparison of ethyl acetate and diethyl ether in ...

A substitute for the volatile solvent diethyl ether has been actively sought for the Formalin-ether sedimentation technique. Ethyl acetate has recently been shown to be a comparable substitute. In an effort to verify these findings and evaluate ethyl acetate under clinical conditions, comparison studies with 62 fresh human stool specimens were performed. …

Comparison between direct smear, formalin-ethyl acetate ...

Comparison between direct smear, formalin-ethyl acetate concentration, and Mini Parasep® Solvent-Free Concentrator for screening of intestinal parasitic infections among school-age children. Chula Med J 2016 May – Jun;60(3): 255 - 69 Background Most patients infected with intestinal parasites are asymptomatic and usually undiagnosed.

Formaldehyde | H2CO - PubChem

Formaldehyde is a colorless poisonous gas synthesized by the oxidation of methanol and used as an antiseptic, disinfectant, histologic fixative, and general-purpose chemical reagent for laboratory applications. Formaldehyde is readily soluble in water and is commonly distributed as a 37% solution in water; formalin, a 10% solution of formaldehyde in water, is used as a …

Comparison of Formalin-Ethyl Ether Sedimentation, Formalin ...

JOURNAL OF CLINICAL MICROBIOLOGY, May 1981, p. 882-884 Vol. 13, No. 5 0095-1 137/81/050882-03$02.00/0 Comparison of Formalin-Ethyl Ether Sedimentation, Formalin-Ethyl Acetate Sedimentation, and Zinc Sulfate Flotation Techniques for Detection of Intestinal Parasites ALLAN L. TRUANT,* STEPHEN H. ELLIOTT, MICHAEL T. KELLY, AND JEROME …

Comparison of ethanol versus formalin fixation on ...

Comparison of ethanol versus formalin fixation on preservation of histology and RNA in laser capture microdissected brain tissues Brain Pathol. 2004 Apr;14(2):175-82. doi: 10.1111/j.1750-3639.2004.tb00050.x. Authors Jack Meng Fen ...

Difference Between Buffered Unbuffered and Neutralized ...

The key difference between buffered unbuffered and neutralized formalin is that buffered formalin acts as the best grade formalin to preserve tissues, whereas unbuffered formalin and neutralized formalin show poor preservation of tissues.. Formalin is a colourless solution of formaldehyde in water. It is an organic compound that occurs naturally, and it has …

CDC - DPDx - Cryptosporidiosis

To maximize recovery of oocysts, stool specimens should be concentrated prior to microscopic examination. Formalin-ethyl acetate sedimentation is the recommended stool concentration method. Given their small size and mass, cryptosporidial oocysts can become trapped in the ether or ethyl acetate plug and fail to sediment properly .

Giardia lamblia infection: review of current diagnostic ...

In these methods, 10% formalin has been fixed and preserved cyst stage and also provides user protection due to microbicidal activity of formalin. The ether or ethyl acetate has been used to remove the fat drop and oils. In this method, less distortion of Giardia cysts occurs in comparison with zinc sulfate flotation.

Figure 1 from Comparison between direct smear, formalin ...

Figure 1. Diagram of Mini Parasep® Solvent-Free (SF) Concentrator. - "Comparison between direct smear, formalin-ethyl acetate concentration, and Mini Parasep ® Solvent-Free Concentrator for screening of intestinal parasitic infections among school-age children"

Comparison of the complete filtration method using an ...

This study aimed to compare detection rates, agreements, and diagnostic performances for stool examinations in all parameters of the complete filtration method using an automated feces analyzer with three manual methods, the direct smear, Kato's thick smear, and formalin ethyl concentration techniques.

Comparison of the quantitative formalin ethyl acetate ...

Comparison of the Quantitative Formalin Ethyl Acetate Concentration Technique and Agar Plate Culture for Diagnosis of Human Strongyloidiasis P. M. Intapan, 1, * W. Maleewong, 1 T. Wongsaroj, 2 S. Singthong, 3 and N. Morakote 4

Comparison of the FeKal CON-Trate system with the …

Comparison of formalin-ethyl ether sedimentation, formalin-ethyl acetate sedimentation, and zinc sulfate flotation techniques for detection of intestinal parasites. J Clin Microbiol. 1981 May; 13 (5):882–884. [PMC free article] Young KH, Bullock SL, Melvin DM, Spruill CL. Ethyl acetate as a substitute for diethyl ether in the formalin-ether ...

Clinical comparison of ethyl acetate and diethyl ether in ...

A substitute for the volatile solvent diethyl ether has been actively sought for the Formalin-ether sedimentation technique. Ethyl acetate has recently been shown to be a comparable substitute. In an effort to verify these findings and evaluate ethyl acetate under clinical conditions, comparison studies with 62 fresh human stool specimens were ...

Comparison of formalin-ethyl ether sedimentation, …

Comparison of formalin-ethyl ether sedimentation, formalin-ethyl acetate sedimentation, and zinc sulfate flotation techniques for detection of intestinal parasites J Clin Microbiol. 1981 May;13(5):882-4. doi: 10.1128/jcm.13.5.882-884.1981. Authors A L Truant, S H ...

A comparative study of formalin-ethyl acetate ...

A comparative study of formalin-ethyl acetate sedimentation technique and Mini Parasep ® solvent-free method in the rapid diagnosis of intestinal parasites Trop Parasitol . Jan-Jun 2018;8(1):29-32. doi: 10.4103/tp.TP_44_17.

A field evaluation of formalin–gasoline technique in the ...

Easy availability of gasoline and its low cost in comparison to ether makes gasoline superior to ether for use in concentration of stools by the sedimentation method in laboratories, including laboratories with limited material resources and also laboratories present in small cities and rural health centers. A field evaluation of the formalin–gasoline procedure to …

Comparison of formalin-ethyl ether sedimentation, formalin ...

Formalin-ethyl ether sedimentation, Formalin-ethyl acetate sedimentation, and zinc sulfate flotation techniques were compared using over 250 clinical parasitology specimens. Fifty positive specimens were identified, and a variety of parasites, including amoebae, flagellates, cestodes, nematodes, and trematodes, were encountered.

Comparison of 2 centrifugation procedures in the formalin ...

A comparison between the standard formalin-ethyl acetate (FEA) stool concentration procedure (centrifugation at 400 g for 2 min) and a modification proposed to increase the recovery of Cryptosporidium oocysts (500 g for 10 min) was performed on 73 formalin-preserved stool specimens known to be positive for Cryptosporidium.