Standards for the characteristics of sulfuric acid and electrolyte for batteries

Free technical library

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Encyclopedia of radio electronics and electrical engineering / Electrician

Appendix 3.1. Standards for the characteristics of sulfuric acid and electrolyte for batteries. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Rules for the technical operation of consumer electrical installations (PTE)

Comments on the article

Table 9

Index	Sulfuric acid of the highest grade	Electrolyte
Index	Sulfuric acid of the highest grade	Diluted fresh acid for pouring	Battery electrolyte
Appearance	Transparent	Transparent	Transparent
Color intensity (determined by calorimetric method), ml	0,6	0,6	1
Density at 20 °C, g/cm³	1,83 - 1,84	1,18 ± 0,005	1,2 ± 1,21
Iron content,%, no more	0,005	0,004	0,008
The content of non-volatile sediment after calcination,%, no more	0,02	0,03	-
Content of nitrogen oxides, %, no more	0,00003	0,00005	-
Arsenic content, %, no more	0,00005	0,00005	-
Content of chloride compounds, %, no more	0,0002	0,0003	-
Manganese content, %, no more	0,00005	0,00005	-
Copper content, %, no more	0,0005	0,0005	-
Content of substances that reduce potassium permanganate, ml of 0,01 N KMnO solution₄, no more	4,5	-	-
The content of the amount of heavy metals in terms of lead,%, no more	0,01	-	-

See other articles Section Rules for the technical operation of consumer electrical installations (PTE).

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

radioactive forest fires 01.02.2007

Canadian scientists monitoring atmospheric radioactivity to detect banned nuclear tests report that the radioactive isotope caesium-137 is rising in the air over Canada in the summer. It arose during the fission of plutonium-239 and uranium-235 in atomic explosions of the 50s and 60s of the last century and was deposited in the soil and plants.

The reason for the appearance of this radionuclide in the air, according to Canadian geophysicists, is forest fires in Alaska, northern Canada and Siberia. In any case, the periods of its detection in the air coincide with the seasons of fires.

Cesium is a chemical relative of potassium, which is essential for every plant, and is easily absorbed by the roots. It either enters the atmosphere from burnt wood, foliage and needles, or, since the boiling point of cesium is only 670 degrees Celsius, it evaporates from the topsoil during a fire. For health, such amounts of the isotope do not pose a danger.

But it is known that in the area of Chernobyl, where radioactive fallout was very high, forest fires are trying to be prevented by any means, since they can carry large amounts of radionuclides into the air.

Other interesting news:

▪ Bow without tears

▪ Solar stations for recharging smartphones

▪ Hybrid aircraft with turbojet engines and electric motors

▪ Smartphone Fly IQ442 Quad

▪ Vortex electron microscope

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the website job descriptions. Article selection

▪ article The writer pees, and the reader reads. Popular expression

▪ article How does the brain store information? Detailed answer

▪ article Pink thistle. Legends, cultivation, methods of application

▪ star connection article. Encyclopedia of radio electronics and electrical engineering

▪ article Elimination of the effect of transistor sounding of powerful UMZCH. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews